Hah! MAybe I see the problem! Are you *sure* your source is sending true note-offs? If I send my K/B's note-on-0s to aseqdump, it reports them as "Note off"! The difference is, if it's a true 128 note-off it prints the data2 value as well: 129:0 Note off 0, note 60, velocity 64 If it's a note-on-0, you get no "velocity" Is that perhaps your case? I'll attach my test midi. -- Pete -- Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here