Jean-François Paiement Douglas Eck Samy Bengio David Barber A graphical model for chord progressions embedded in a psychoacoustic space. 641-648 2005 conf/icml/2005 ICML http://doi.acm.org/10.1145/1102351.1102432 db/conf/icml/icml2005.html#PaiementEBB05