The Music Information Retrieval Evaluation eXchange (MIREX) is an annual evaluation campaign for Music Information Retrieval (MIR) algorithms, coupled to the ISMIR conference. MIR tasks evaluated at past MIREXs include: *Audio Train/Test Tasks **Audio Artist Identification **Audio Genre Classification **Audio Music Mood Classification **Audio Classical Composer Identification *Symbolic Genre Classification *Audio Onset Detection *Audio Key Detection *Symbolic Key Detection *Audio Tag Classification *Audio Cover Song Identification *[http://www.music-ir.org/mirex/wiki/Real-time_Audio_to_Score_Alignment_(a.k.a_Score_Following) Real-time Audio to Score Alignment (a.k.a Score Following)] *Query by Singing/Humming * *Audio Chord Estimation *Audio Melody Extraction *Query by Tapping *Audio Beat Tracking *Audio Music Similarity and Retrieval *Symbolic Melodic Similarity *Structural Segmentation *Audio Drum Detection *Audio Tempo Extraction Further links MIREX Wiki