Standards and Representations Metadata schema (Dublin Core, XML, MARC) MPEG Symbolic (Guido, NIFF, kern, etc.) Coding Format conversions Formal models Z39.50 Protocols for MIR (CDDB) Similarity Melody Polyphony Timbre Rhythm Form Style / genre Recognition / Analysis Optical music recognition Instrument Timbre Style / genre Singer identification Pattern discovery (form) Extraction Transcription Melody Voice separation Polyphony Query Fingerprinting By example Humming Expressiveness, complexity Summarization Filtering for music and music queries Indexing Classification Usability User interface Needs and expectations Design Music imaging / score digitization Viewing and listening tools Corpora and databases Systems issues Performance Compression Scalability Databases Architecture Distributed search Balance loading Multi-agent systems Mobile applications Evaluation of MIR User needs and expectations Building test collections Experimental design Metrics Socio-cultural aspects Business models and experience Music and cultural heritage valorization World music Intellectual property issues Watermarking