midi plugin to store chords and use them to play bass lines
and chords with one hand 
G# midi note 68 above middle C turns off the midi hold/latch/sustain 

C 60 starts back to beginning of sequence
C# 61 takes you back a chord 
61 , 62  plays current chord
63, 64 plays next chord
65, 66 plays random chord from sequence 

midi notes above 68 sends all notes off