A Flexible Query Framework for Music Data and Playlist Manipulation

Motivated by the explosion of digital music on the Web and the increasing popularity of music recommender systems, this paper presents a relational query framework for flexible music retrieval and effective playlist manipulation. A generic song representation model is introduced, which captures heterogeneous categories of musical information and serves a foundation for query operators that offer a practical solution to playlist management. A formal definition of the proposed query operators is provided, together with real usage scenarios and a prototype implementation.