Emiru Tsunoo Taichi Akase Nobutaka Ono Shigeki Sagayama Music mood classification by rhythm and bass-line unit pattern analysis. 265-268 2010 ICASSP http://dx.doi.org/10.1109/ICASSP.2010.5495964 conf/icassp/2010 db/conf/icassp/icassp2010.html#TsunooAOS10