Nicola Orio David Rizo Riccardo Miotto Markus Schedl Nicola Montecchio Olivier Lartillot MusiCLEF: a Benchmark Activity in Multimodal Music Information Retrieval. 603-608 2011 ISMIR http://ismir2011.ismir.net/papers/OS6-3.pdf conf/ismir/2011 db/conf/ismir/ismir2011.html#OrioRMSML11