I loaded up a simple style with a strumming guitar, a finger=picked guitar, bass and drums and had them play 8 bars of a C major chord. Froze all but the finger=picked guitar and changed the chord sheet to play a bar of the diatonic triads in the key of C (C, Dm, Em, F, G, Am, Bdim) and listened to the results. Some sounded very smooth and natural. Others more spicy (but not completely unmusical).

It would take more theory knowledge and confidence than I have to make a full piece. Besides, some of the "combinations" are not difficult for a single instrument to play, and are almost certainly in most Real Tracks "library" of recorded chords. For example. if Am over Cmajor produces Am7.

But I can see it being useful with BIAB for altered voicings, just the aural effect, and (with maybe simple extended chords stacked with other chords), a way to get the sound of some complex chords that one cannot get from a single RT, or maybe even from a single instrument at all without sounding thin (if not impossible).

Anyway, the "philosophical" takeaway is that it isn't what's played, it is what is HEARD that's important.

Still open for ideas on how to use this in our favorite musical program.

BIAB 2021 Audiophile. Windows 10 64bit. Songwriter, lyricist, composer(?) loving all styles. Some pre-BIAB music from Farfetched Tangmo Band's first CD. https://alonetone.com/tangmo/playlists/close-to-the-ground