I've just tried similar with mute on the bass track and that seems to work as I'd expected, but the melody track still doesn't. I'll try the others. OK the other tracks all seem to work as expected.

I've just noticed that the Melody track's VU-meter stops showing signals even though the track is still playing.

The melody track, still with that "no patch" is now playing on piano from power-up. I've checked with step edit melody and there's no embedded instrument from there.

So: BiaB is playing a melody instrument by default, obviouslt "thinks" it's muting it because the melody track VU stops showing signal, but the instrument keeps playing.

Anoher observaion that I don't understand. I'm pretty darned sure I could get the mute to work by resetting all bars, saving, closing BiaB, reloading the song and setting the bar again, but at the moment I'm failing to get that to work. Maybe my memory lets me down here, but I'm unconviced by that ... I just have no better explanation at the moment.

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
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