Support for control change 123 - all notes off
I know it's not the most common way to use NS2, but it does make a good multi-synth engine for external sequencers. However it doesn't seem to support "all notes off" (cc 123), meaning when I try to use my Akai Force to sequence NS2 I can get hung notes if I stop a midi sequence while a note is playing.
The Force sequencer is probably being a bit lazy, by not sending individual note off messages if a sequence is interrupted, but it seems to rely on the "all notes off" message when it stops playing a midi loop.
Alternatively, Akai could licence Obisidian for use on their Force and MPC gear - that would rock!