Frinika

I have not worked with this program, but it appears to be a midi sequencer which supports notation and audio. (Of course, if there are any other midi sequencers which support notation [priority 1] and audio [priority 2], I'd love to hear about them. Especially if they're here at PortableApps.)

Program: Frinika

License: GNU GPL

Description: Audio workstation

Website: http://frinika.appspot.com/

Other: No clue - I have not (yet) worked with this program