spencersalazar/chuck — pull request #26 by paiv (2013-12-18 19:54:27+00:00)
Title: - ignore non-note commands

The command byte of a MIDI message is not a mask, it's a range. For note-on the range is 0x90 - 0x9F. By applying 0x90 mask you would pick non-note messages (0xB0, 0xD0).