INTRODUCTION
The circulation of music on the Internet only came
about with the arrival of two specific technologies. The first involves
compression systems (notably MP3) that allow the reduction of the
magnitude of each file, and the second involves the progressive
enlargement of the band available to home users (ADSL) which has
drastically accelerated data transferral.
Finally, the birth of Napster and subsequent peer to peer systems
[Merriden 2001] has made the practice of searching for pieces of music
on the Internet widespread and stable [Mari 1999], to the point of
superseding most traditional music media, and generating new forms of
commercialisation and control of musical data [Prato 1995;
Silva-Ramello 1999]. Without mentioning the legal problem of the
explosion of the Internet in the circulation of materials [Darias de
las Heras 2003], it is certain that the primitive initial modalities of
gathering pieces on the Internet have progressively evolved, taking on
considerable technological and commercial features [Di Carlo 2000] that
make it possible to identify and download virtually any piece one
should desire. The result is an entirely new modality of music
consumption, compared to that encouraged by traditional media,
essentially passive and lacking in any kind of interaction.
With the arrival of the Internet and all of its corollaries the music
listener’s problems change profoundly; his/her interest is
principally drawn towards the “choice” of music,
often independently from the use that he/she will make of it or from
the listening modalities that will be put into play.
In this paper our intent is to analyse the data that emerges from a
concrete occurrence (case-study) in the circulation of pieces of music
through the Internet, and to evaluate user behaviour.
1. THE SERVER AND ITS STATISTICS
At the University
of Trento a Server dedicated to gathering and distributing audio
material has been active since December 2003.[
2]
The project, set
in motion by a local music association[
3]
, was taken up by the
Department of Computer Science and Telecommunications[
4]
as well as by the ITC-irst
Research Institute of Trento[
5]
which – on the base
of the musical material - set up research projects on the technological
architecture of the system, on the support for choosing pieces and on
the conservation, cataloguing, and recovery of the data. These themes
are become topics of study and training for some students and
collaborators.
The server in
question is a subsystem of a more generic site, dedicated to spreading
musical information and news. The system’s architecture
[Aguzzoli-Avesani-Massa 2002] is subdivided into three principal
modules: the main page concerns the general musical site, from which it
is possible to gain access to the pages of CoCoA, the server devoted to
the selection of pieces, and then to KaCo, the download site, connected
to the music database. This architecture reflects a distinction between
the principal user activities, using a model common to several other
web sites: general-purpose visit, selection of material, and actual
content downloading.
In order to give
a concise description of the server’s activity, we will now
present some statistical results from 2005 alone. The data under
discussion comes from KaCo, the server that contains the musical
pieces, that is the one to which the users gain access after having
created a compilation (as will be explained below).
The evolution
over time of all of the indicators brings to light a difference between
the first and the second part of the year. Possibly because between May
and June there was a 50% reduction of the band capacity allocated to
the service.
The average
number of pieces downloaded daily (see Fig. 1) is over 4,300. The
average between January and April is 5,780, whereas between July and
December it falls to 3,470.

Figure 1. Number of Pieces for Day.
The quantity of data downloaded (see Fig. 2) is almost 250 Gigabytes
per month (ca. 8 GB/day).
The average between January and April is 380 GB/month (13 GB/day),
whereas for the following months of the year it is 170 GB/month (6
GB/day).

Figure 2. GigaByte for Month.
The number of “visits” per day (see Fig. 3) is 737
in the space of the whole year. From January to April it is 790, while
from July to December it is 716.[6]

Figura 3. Number of Access for Day.
2. THE CONTENTS
The server draws
together pieces of various origins, all declared by the creators of the
site to be public property. The main sources are personal recordings of
musicians’ own performances, those of the musical
association’s chamber group, those of colleagues who have
given their consent, and commercial recordings that have become freely
distributed following the bankruptcy of the record companies (mostly
from eastern Europe) who held the rights to them.
2.1 The composers
There are 440
different composers present in the catalogue, who belong to every
period and/or genre. Beginning with the repertory of Gregorian chant,
one reaches in fact the first decades of the 20th Century (Nielsen,
d’Indy), which coincides with the lapse of time used for
didactic purposes by most conservatories. Given the declared origin of
the audio materials, many of the composers have a clearly eastern
European origin, but the major representatives of Italian, French and
Mitteleuropean music are also present. Alongside the most illustrious
names of the History of Music one can find relatively little known
names, satisfying in this way the demand both for well known composers
and that for minor or for more specialist demands. Figure 4 illustrates
the number of pieces per composer, in alphabetical order from Abel to
Zwierzchowski, listing however only the more relevant composer.
Figure 4. Number of Pieces by Composer
(excerpt).
2.2 The pieces
The pieces
available on the server are all encoded in MP3, following one of the
most de facto widespread standards on the Internet. In all there are
11,603 files, more than 50 Giga-Bytes of data, all of which have been
given names of eight characters at the most, in a non uniform if not
out and out random way, or at least using criteria that are not musical
and/or semantic, giving an overall impression of aleatoriality.
The analysis of
the data was then carried out with the aid of an internal Database,
extremely rich in information, which allowed the extraction of some
significant results.
The pieces were
grouped, for example, by genre, even if generally in a somewhat erratic
way. The typically musical habit of superimposing
“genres” and “forms”,
“stylistic attributions” and
“compositional structures” in fact led to a fair
degree of terminological redundancy and a loss of coherence in the
grouping. Notwithstanding these observations, the categories used are
well apt to distinguish the pieces and are largely correct, considering
above all their use on the behalf of users who are not completely at
ease with the many semantic nuances of the musical repertory. There are
54 “genres” used in all, and they distinguish the
pieces most importantly according to historical periods (es. Baroque,
Early music, etc.), repertories (ex. Opera, Chamber music, etc.), and
forms (Concertos, Symphonic Opera, etc.). The most important indication
one can draw consists in the differentiation (see Fig. 5) which shows a
substantial majority of instrumental pieces with respect to vocal ones.
Figura 5. Presenza di musica vocale e strumentale

Figure
5. Presence of
Instrumental and Vocal music.
Another significant
fact consists in the distribution of the pieces according to composer.
As is clear from the preceding Figure 4, even though a small number of
very well-known composers present the greatest number of pieces, most
of the composers are present with less than 10 pieces (see Fig. 6).

Figure 6 (right)
. Distribution of Pieces by group’s numbers related
to each composer.Figura 6. Distribuzione dei brani per raggruppamenti
numerici relativi a ciascun compositore.
Each
file contains a single piece of music, regardless of whether it is
autonomous or is part of a larger formal structure. For this reason, in
order to “recompose” more articulated forms (ex.
Suites or Concertos)
the user must identify and select each single movement.
Both data
have evident statistical consequences concerning the probability of
choice on the behalf of the users, that at present have not been fully
analysed, but whose partial results will be examined further along in
the discussion.
3. ANALYSIS
The analysis of the data provided by the CoCoA and KaCo servers comes
up against two principal difficulties: on one hand it encounters an
enormous quantity of information; on the other it is tied up with the
“virtual Self” [Caci 2001], the
navigators’ absolute anonymity, which makes a clearly linear
reading of the observed data impossible. Although from the
server’s position it may be possible to come to a partial
identification of the users, the impossibility of privacy violation
prevents us from undertaking any research in this direction. The users
will therefore be considered as a necessarily collective unity, united
by the adhesion to the server (which one must join, even if this is
free of charge), which represents in this sense a real community, even
if made up of absolutely anonymous individuals who do not necessarily
interact among themselves.
3.1 The users
The system’s total number of registered users is 84, 366 (as
of 28 December 2005), not all of whom however have undertaken data
downloading sessions. Reasons such as relation with the
site’s user interface, connection speed, and interest have
led to limiting this latter category of users to 65,148, discarding
19,218 unities. This deviation is amply justified by strictly operative
reasons: the user interface, currently being rewritten upon insistent
user request, has led to much difficulty in comprehending the download
mechanisms, and furthermore the sudden reduction of the transfer band
carried out by the University in order to save funds in the second half
of 2005 (for this see above all Fig. 2) has compromised in an evident
way the speed of the initial transfer, leading to lengthier downloads
and the estrangement of some users.
Among them, to conclude, only 890 fully completed the registry
procedure providing (not necessarily true) personal information,
including photos, interests, and various other information. Just as any
other modern portal, the CoCoA server in fact allows the creation of
mini-communities that encourage the creation of personalized pages on
the behalf of each user, and the possibility of interacting and
creating relationships. The Department of Sociology and Social Research
of the University of Trento is involved in these aspects, within the
span of the research project.[
7]
3.2 The musical
choices: criteria and results
The most downloaded piece of the entire collection is Maurice
Ravel’s Bolero (3,694 selections),2 while the least
downloaded are two arias (Oto bluznierca! e Boze poblogloslaw) from
Karol Szymanowskj’s King Roger (26). In all, 3,061,099 pieces
were downloaded (as of 28 December 2005), with an average of
263.8196156 downloads for each piece. The second most downloaded piece
was Mozart’s Minuet K 122, with a total of 1,689 selections.[
8]
A statistical analysis of musical preferences based only on one piece
or one composer has very little meaning in itself. Indeed, it only
expresses the absolute preferences of the user community, and is
perhaps useful as an invitation to discuss the pieces and the reasons
of their reception, but is surely non able to represent the cultural
mechanisms of the choices made: in order to become significant, these
results would have to be compared with detailed information on the
users (sex, profession, age, education, etc.), and such a mass of data
would make any analysis practically unfeasible, even in possession of
all of the necessary information.
Furthermore, one must not underestimate how the very procedure of piece
selection in CoCoA does not favour the choice of single pieces, but,
obviously, the creation of lists (from one to 15 pieces in all) of
files, to be downloaded all at once. This implies that for every
download session each user does not limit him/herself to selecting one
single piece, but proceeds rather by coupling multiple files.
Although it may not appear significant in our current contest, the
enormous distance between the first two positions is worth some
consideration. Although CoCoA only deals with classical music, the user
reservoir which it aims at has many interests, not necessarily
concentrated specifically upon this repertory. The MP3 standard has
proven for the Internet to be a possibility of transmitting files
related to the popular music repertory (pop-rock music), for which
reason it is extremely likely that most contacts come about with
reference to this repertory. The Bolero, from this point of view, is
one of the most well known pieces, not least by way of the homonymous
film that in 1981 brought Ravel’s music to the attention
of all types of media.[
9]
The first 45 positions in the classification of the most downloaded
pieces are in any case instrumental pieces. The first vocal piece, the
Kyrie eleison (with 1.106 selection) from Wolfgang Amadeus
Mozart’s Requiem, appears in the 46th position, followed at a
short distance by La voilà (47th), taken from George
Bizet’s Carmen. The other sections of the Requiem follow
immediately, downloaded however less and less frequently: the
Confutatis (50th with 1,092 selections), Requiem aeternam (56th with
1,073 selections), Recordare (67th with 1,050 selections), Dies irae
(72nd with 1,021 selections), Tuba mirum (77th with 1,008 selections),
Lachrymosa (82nd with 997 selections), Rex tremendae (84th with 993
selections), Benedictus (93rd with 966 selections), Sanctus (94th with
965 selections), Agnus Dei (97th with 953 selections), Hostias (99th
with 951 selections), Lux aeterna (102nd with 945 selections), whereas
a Cum sanctis (4709th with 257 selections), erroneously attributed to
the same work, closes the list of pieces by Mozart. The Requiem is
present in another registration, also very often downloaded, which once
added to the preceding classification has the effect of entirely
upsetting the classification:
| Section |
1st
version |
2st
version |
Total |
| Requiem |
1073 |
870 |
1943 |
| Kyrie |
1106 |
870 |
1976 |
| Dies
irae |
1021 |
834 |
1855 |
| Tuba
mirum |
1008 |
825 |
1833 |
| Rex
tremendae |
993 |
825 |
1818 |
| Recordare |
1050 |
863 |
1913 |
| Confutatis |
1092 |
883 |
1975 |
| Lacrimosa |
997 |
844 |
1841 |
| Domine
Jesu |
1002 |
843 |
1845 |
| Hostias |
951 |
858 |
1809 |
| Sanctus |
965 |
859 |
1824 |
| Benedictus |
966 |
883 |
1849 |
| Agnus
Dei |
953 |
361 |
1314 |
| Lux
aeterman |
945 |
361 |
1306 |
From the sum of the two versions it is clear that the Kyrie springs
into the second overall position, overcoming moreover another piece by
the same composer, giving evidence of the vast appreciation of the
music of Mozart. This analysis of the Requiem alone further confirms
the fact that the choice of files was absolutely free, without any
exterior constraints, to the point of allowing the total dismemberment
of the work in extremely disparate quantities, based upon an
unforeseeable specific interest in the single movements or sections.
Some of these differences in position in the user classification can
surely be attributed to the complexity of the server’s
interface, even though the distance between the two extremes (1976
selections of the Confutatis against 1306 of the Lux aeternam) appears
frankly unjustifiable. The most plausible hypothesis involves a
substantial distance between the primary interests of the visitors of
the site and CoCoA’s repertory. The lack of balance among the
choices of the Requiem induces us to suspect that the users perhaps are
not entirely aware of the work in its entirety, and for this reason,
with the only possible exception of the Kyrie eleison, the single parts
were selected in an irregular manner. The fact that in the Cum sanctis,
erroneously attributed to the work, we see an extremely low number of
downloads (only 257), demonstrates in any case that the users did not
fall into the same error as the site’s creators, showing a
greater preference for the other sections of the work.
The distinction between the choice of single pieces and the
“grouping” of pieces (from here on
“Compilations”) is therefore decisive, given that
the latter procedure allows us to verify the coupling of the pieces,
and therefore the degree of adherence (stylistic, technical,
linguistic, etc.) between them, considered as a
“unity”.
The system presents two different quantifications of the compilations.
The CoCoA server had 1,246,243 selections, whereas on KaCo 798,830
downloads were carried out. The deviation between the two figures has
the same motivations as stated in 3.1.
Further significant data seem to be offered by the total number of
pieces in the compilations requested of KaCo, 5,890,377, which when
compared to the number of pieces actually downloaded, 2,382,633, shows
a high mortality of the requests: in almost half of the cases the users
do not succeed in downloading the music they inserted in the
compilation, probably for reasons of overcrowding of the site. It is
moreover interesting to note the average number of pieces per
compilation. The ratio between the pieces requested in KaCo and the
number of compilations (5,890,377 / 798,830) comes to 7.4 pieces per
compilation, whereas an analogous calculation applied to the 1,246,243
compilations present on CoCoA comes to 6.2. In the latter case the
difference may be traceable to an elevated number of two to three piece
“trial” compilations, which the users do not even
try to download.
Generally speaking, note that the first 13 composers in the
classification of the most downloaded (see Fig. 7) account for over 50%
of the total preferences:
| Compositor |
Pieces |
Download |
| Johann
Sebastian Bach |
7,70% |
9,66% |
| Wolfgang
Amadeus Mozart |
6,82% |
9,49% |
| Giuseppe
Verdi |
6,87% |
6.74% |
| Ludwig van
Beethoven |
5,30% |
6,49% |
| Richard
Wagner |
5,54% |
4,98% |
| Pyotr
Il'yich Tchaikovsky |
2,78% |
2,99% |
| Fryderyk
Franciszek Chopin |
2,11% |
2,91% |
| Giacomo
Puccini |
2,89% |
2,83% |
| Johannes
Brahms |
3,57% |
2,72% |
| Antonio
Vivaldi |
1,36% |
2,27% |
| Franz
Schubert |
2,12% |
2,25% |
| Franz
Joseph Haydn |
2,15% |
1,85% |
| Sergey
Prokof’ev |
1,83% |
1,58% |
| n.
13 |
51,04% |
56,76% |

Figure 7. Percentage among the first 13
composers of expressed preferences. Values rounded off and referred to
56,76% of total preferences reached by the composers.
Collecting the 54 “genre” categories
that appear in the site into 10 larger categories (ex. grouping
“Symphonic Opera” with “Opera”
and so on), one obtains an astonishing result.

Figure 8. Percentage of
preferences among the musical genres.
In this way the vocal genre, and Opera in particular, takes on a
primary role among the preferences, even though the presence of surely
still combinable “genres” here maintained distinct
in order to show the peculiarities of the cataloguing reminds us that
the general preferences go above all to instrumental music.
4. DISCUSSION
The presence of such a high number of registered users, of
telecommunication contacts, and of available pieces, could lead one to
portray the process of piece choosing as a typical mass phenomenon.
Actually, the nature of the computer, generally used in solitude,
allows us on the contrary to individuate entirely personal choices, to
see how the preferences were carried out within the full control of
each user’s own integrity. As is known, mass psychology tends
to modify individual behaviour, showing characteristics of uniformity
that encourage us to imagine a kind of collective mental unity.
The only “collective” element of the CoCoA
informatic system actually consists in the objectivity of the system of
selection. The “collective” factor at this point
equates to each user’s degree of adherence to the modalities
of selection of the pieces and of the compilations (that is, to the
interface), with the ensuing elements of social psychology, which
«studies phenomena in order to correlate the way people take
on, handle, elaborate, or disregard information coming from the
environment (whether natural or virtual) following the idea that these
processes always come about in a specific social context, made up of
people who interact, who belong to different groups and categories that
are in turn in reciprocal contact, in a culture that makes some kinds
of behaviour more desirable that others» [Cavazza 1997, 14].
CoCoA, like all portals of its kind, produces a slight process of
influence by way of its “community” aspects; in any
case the 890 users who gave all their personal information make up a
very small percentage of the 84,366 total users.
The compilations express the degree of preference of each individual,
because they are defined on the basis of personal, not collective,
experiences. Precisely because these preferences are based on strictly
personal choices, the compilations might not represent the
“foremost” choices of each user. For example, I
like Mozart, and I therefore chose pieces by Mozart. However, for the
very reason that I like Mozart, quite probably I already own pieces by
Mozart: on cassette rather, or on record or CD. In all likelihood, the
user will choose pieces that he/she does not possess, even though this
is not infallible; he/she might also select pieces that he/she already
is acquainted with and of which he/she owns a copy, even if only to
have a different performance, or to have it in a format (MP3) that is
easier to manage (i.e. with an MP3 reader, or listening to music on a
Personal Computer or Laptop).
The compilations could be subdivided into four possible categories, on
the basis of the criteria used in choosing:
a)
“Objective compilations”, which contain the pieces
of a work that is made up of different movements;
b)
“Monothematic” compilations, which contain pieces
by a single composer;
c)
“Homogeneous” compilations, made up of pieces that
all belong to one genre;
d)
“Irrational” compilations, made up of pieces by
different composers and in different genres.
The analysis of the data on piece pairing and on the compilations
unfortunately has not yet reached its conclusion, but the
“objective” and “monothematic”
categories seem without any doubt to stand above the following two.
Within the fourth category of Compilations, one might note a seemingly
unusual – if reasonable – practice. Some users in
fact select their choices in an alphabetical manner, that is following
the order of presentation of the composers.
CONCLUSIONS
Analyses of the socio-psychological mechanisms on Internet are
generally carried out following schemes, which are perhaps not very
advanced but quite efficacious, based upon oppositions: info-rich vs.
info-poor [Maldonado 1997],[10]
cyber-democracy vs. Big Brother [McLuhan 1964; Kerr 2004], etc. Such
analytical procedures, while presenting rich results and very
interesting prospects, tend not to consider one of the foremost
consequences of the digital explosion of our time, surrounded as we are
by “Information Technology” [Rapaport 1991], which
consists above all in our relation with a virtual reality which, in the
acceptation of Merleau-Ponty [1954], becomes an “existential
space” and therefore a completely new perceptive environment
[Attardi 2001].
5.1 Profile of the
users
The most important mechanism in the relation with the new computerized
environment can be found in the usability level of the available
instruments, and from this point of view the CoCoA system appears to be
quite encumbered. The interface problems are so evident as to currently
necessitate a thorough revision. Another knotty point is the band
available to the server, having been reduced in the second half of 2005
and thus lengthening the usage time of the system. This means that the
profile of the average user of the system is characterized by several
aspects:
a) He/she must be interested in classical music (which is not to be
taken for granted, given that popular music today, whether on a
commercial level or in the principal media’s programming and
distribution, seems to be the model of contemporary music in a
virtually undisputed way);
b) He/she must have a connection without time limits (given the great
amount of time necessary for downloading, above all after the band
reduction);
c) He/she must have a fast connection (at least ADSL, to be able to
bear the quantity of data in every compilation: with an average of 7.4
pieces, each of a presumed size of at least 2 Mb, every download
“weighs” at least 15Mb);
d) He/she must be musically educated (both in order to recognize any
errors in the cataloguing/classification of the database, and to pass
the “obstacle” implemented by the site’s
administrators who, before allowing downloads, require each user to
answer a few questions involving musical culture. This procedure aims
at systematically “slowing down” the downloads so
as not to overwhelm the server’s activity).
The extreme precision of these “minimum”
characteristics for complete usage of the server automatically
reinforces the impression of a homogeneous community, perfectly in line
with the idea of the micro-worlds [Attardi 2001, 22] that make up the
Internet.
5.2 The selection
of music
Rather than in various theories of virtual communities, the real
fulcrum of interest in this case is to be found in the repertory which,
let us remember, is available free of charge. Perhaps this is the
reason for the scarce collaboration in constructing an active community
among the various users (remember the “no more
than” 890 users who registered completely) and for the much
greater attention that was given to choosing and downloading the pieces.
Choice theories have long since accepted the role of emotion,
confirming that choices are not made only on the basis of strictly
rational thoughts or instincts. In particular,
“regret” theory [Rumiati 2000, 88-90] represents
quite well the tendency towards “less risky” or
more economic choices. This attitude in any case retains some strongly
rational connotations (utilitarian) that in the case at hand emerge in
the gratuitousness of the goods and in their, relative, simplicity of
retrieval. From this point of view the site, in spite of its many
difficulties of access and adhesion, closely recalls
Skinner’s Box,[11]
which highlights the performance of behaviour that provides a reward
(the pieces).
The difficult path towards retrieving the music puts in act precisely
the type of repetitive behaviour [Wallace 2000, 253] that tends towards
a perpetual gratification in learning the logical mechanisms that
govern the site’s structure, with consequent
“dependency” effects. The ratio of data downloaded
and daily visits indicates an average of 11.5 Mb downloaded at every
contact, which is frankly a very high number which seems justifiable
only by imagining a sort of “hoarding” which is
often self-justified. Let us recall in this regard downloading in
alphabetical order and in its clearly systematic nature which seems
more oriented towards the total acquisition if the pieces contained in
the site than towards their conscious selection.
Other apparently irrational behaviour, on the other hand, often
converges in a justification motivated by
“comparison” (ex. not having reached an objective
“by the skin of one’s teeth”, or else not
having reached it by a substantial margin). This attitude, according to
experiments done by Kahneman e Tversky [Rumiati 2000, 94-95], shows
«that, when the result is not reached “by a
hair’s breadth”, the counterfeited construction
[reconstruction of events intended to reach a result that has not come
about] highlights the delusion or the anger of he/she who was closest
to the objective […] But it also shows that the greatest
satisfaction is associated with an objective reached fortuitously,
compared to the situation in which the “margin” in
reaching it was greater» [Rumiati 2000, 94]. This is
particularly true for “music enthusiast” users who
accidentally came across the site, or for the many protests about the
continual slowing down that they suffered, whether due to the interface
or the reduction of the available band.
Finally, “cognitive dissonance” [Rumiati 2000, 94
sgg.] indicates the extent of the gap between expectations and results,
the alternatives and the “affective” considerations
with respect to the initial expectations, and comes out essentially in
the protests of the various users. In fact, the site does not put
itself forward in the way of a Web-based decision making, in which the
system itself suggests solutions in reaching one’s own
desires [Fasolo-McClelland-Lange 2005, 340], but in any case guarantees
the users’ overall satisfaction, based on their competence
and their interests.
As far as the contents of the choices are concerned, if the application
of fundamental rules (ex. “objective” compilations)
shows a relative cognitive simplicity, which does not take into
consideration the many possibilities of feasible combinations,
recalling instead only rudimental mnemonic elements, at the same time
the knowledge of such groupings clearly indicates that this kind of
choice belongs without doubt to the Implicit competence model [Jones
2004, 152-153] rather than the Explicit competence model, giving the
consequence of not being clearly quantifiable on the basis of accesses
to the system, but only hypothesized on the basis of the results
obtained. In fact the distinction between implicit and explicit
knowledge becomes evident when the description of the events governed
by rules is so complex and subtle as not to be intuitable or achievable
by imitation [Baroni-Dalmonte-Jacoboni 2003, pp. 4-5]. Therefore, in
our case, we can suppose on the basis of the results in our possession,
that the users have a good dose of musical competency, but not that the
latter is necessarily the only criterion of adhesion to the
mini-community of the site in discussion. The choices appear to be
carried out on the basis of a choice mechanism that is influenced above
all numerically [Baron 1998, 411] in which the surpassing of indicators
(average number of available pieces per composer) induces reinforcing
the choice, which is also predictive, in certain areas of interest. In
particular we are dealing with a linear model [Rumiati-Bonini 2001, 155
sgg] in which one element of the information (in our case the title and
the composer of the work) tends to add itself to the weight of the
variable (number of pieces), thus reinforcing the conviction of the
choice. This is particularly true for the concentration of 56,76% of
the data downloaded in only 13 composers, but also in referral to the
analysis of the absolute values, which tends to reward the notoriety of
specific pieces, regardless of the available alternatives.
REFERENCES
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