ABSTRACT
This chapter explores the term 'computational method' to include computational approaches to retrieving data from recorded performances as well as tools for the abstract display, visualization and automatic analysis of such data. Expressive music performance is the process of singing or playing a musical instrument in order to create musical output. By music annotation, people understand the process of retrieving performance data from audio recordings or labelling audio files with content-based metadata. A system that matches two audio files on to each other is MATCH (Music Alignment Tool CHest), S. Dixon and G. Widmer, 'MATCH: A Music Alignment Tool Chest', in Proceedings of the 6th International Conference on Music Information Retrieval. A crucial property of music performance is that it evolves over time. Therefore, one requirement of a visualization is that it should reflect or recreate this temporal process. Appropriate and possibly interactive data visualization can be used in music education or for practising an instrument.
