The Musical Instrument Taxonomies uses the RDF/OWL framework to describe the concepts related to musical instruments, taking into account two different classification systems: i) one proposed by Henry Doktorski which is denoted taxonomy ‘A’, and ii) one proposed by Jeremy Montagu & John Burton which is denoted taxonomy ‘B’. For more information about both of the classification systems see the Musical Instrument Taxonomy specifications for Taxonomy-A and Taxonomy-B
 Sefki Kolozali, George Fazekas, Mathieu Barthet, Mark Sandler. Knowledge Representation Issues in Musical Instrument Ontology Design. 12th International Society for Music Information Retrieval Conference (ISMIR 2011), 2011.