Good point, Pipeline. With only 1 midi port, BIAB gives this no priority......in fact the Output Chords help file still predates Real Tracks.,,..and assumes your midi driver is going to the harmonizer and all your midi tracks come from an external synth!

The last time I invested so much energy into Loopback was Hubi's Looback midi driver in 1999... for an app that turned a computer keyboard into a chromatic piano keyboard.

I was hoping for an elegant single install to aid in the task of opening another BIAB port.,..but it will take 2 apps to do this, tweaking, and I'm old and tired....and done. I'll use Real Tracks behind my 4 Freshmen harmonies.

Thanks for all the great suggestions and generous help. You are truly a terrific and helpful bunch.