The document discusses the growth of digital music consumption, highlighting the $6.9 billion market and the prominence of streaming services, particularly on mobile devices. It introduces 'Virtuoso', a music retrieval and recommendation system that classifies music by genre and affective states, achieving accuracy rates of 79.7% and 58% respectively. The document includes a link to a demo of the system.

1. Virtuoso
Music Retrieval and Recommendation
Eanes Torres Pereira
eanes@computacao.ufcg.edu.br

2. Motivation
● Digital music consumption last year: 6.9 billion dollars
● Streaming: an important portion of revenue
○ Protection against copyright problems
○ A great source for user data mining
● The spread of smartphones: a key factor for streaming growth
● “The increase in mobile offerings has had a positive effect. Latest statistics
show that more than half of Spotify’s users are now streaming music on
mobile devices” (IFPI).
IFPI Digital Music Report 2015: http://www.ifpi.org/downloads/Digital-Music-Report-2015.pdf
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3. Virtuoso - Our Capabilities
● Music classification by genre,
specialized in some Brazilian music
categories:
○ Disco;
○ Forró;
○ MPB;
○ Repente;
○ Rock;
○ Brega;
○ Sertanejo.
● Our overall accuracy: 79.7%
● Best accuracy by other systems: 81%
● Music classification by affective states:
○ Happy;
○ Romantic;
○ Funny;
○ Aggressive;
○ Moody,
○ Neutral.
● Overall accuracy: 58%
● Best accuracy by other systems: 64%
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4. Try it: http://lvc.dsc.ufcg.edu.br/html/virtuoso-
demo/en/
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