The service provides access to Linked Data that describes the audio held in the Internet Archive’s Live Music Archive (also sometimes known as "etree"). The metadata from etree has been converted to RDF and is exposed through a SPARQL endpoint along with browsable pages. The dataset contains information describing over 100,000 freely available recordings of live performances by 4,000 artists, chiefly in rock genres, including 1,600,000 individual tracks. Audio files are available in a variety of formats, and each recording is accompanied by metadata describing information about dates, venues, set lists, the provenance of the audio files and so on.
Through our analysis and processing of the metadata as Linked Data, we enable structured access to the underlying audio files, providing a corpus that can be used for Music Information Retrieval (MIR) tasks such as genre detection, key detection, segmentation and so on as exemplified by the MIREX series of workshops. It provides multiple recordings by individual artists allowing comparisons across performances, and a novel layered data structure for alignment with geographic positioning of venues.