I think this is going to be powerful when mixed with Csound~.

http://createdigitalmusic.com/2012/09/mind-boggling-power-as-note-adds-timelines-piano-roll-notation-to-maxmsp/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+createdigitalmusic+%28createdigitalmusic.com%29

Best,
Peiman