If you are doing it in BIAB, then you are presumably doing it on the Melody or Soloist tracks (since the other tracks get generated by the style, and the bass track will be style-dependent, not a copy of another track.

So, it seems to me that if you are entering a horn part on the melody track, just copy the track to the soloist track, assign a bass instrument to it, and lower the octaves accordingly. That is certainly doable in BIAB.

Clearly, this is MIDI only, as RealTracks won't track to each other in different octaves.

John

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