Thanks to last 5 commenters, rayc, Marty, David Snyder, Janice & Bud, and Vic - I've replied individually to previous responses - but it's easier this time to reply in once go. Basically I definitely got the gain on the solos too high, so I want to comment on that:

I've now over 2 hours of instrumentals I've created using BiaB this year (over 30 in total), though as I've done variations on cord structure compositions I've actually 'only' created 12 new pieces (which is great for in under a year, though 2 are instrumental versions of songs I wrote in the 70s & 80s). I've written over 80 songs since the late 60s and that's really my forte, but I can neither play guitar nor sing in the minuscule retirement flat I was forced to move into 17 months ago due having an even older neighbour and 2 and a bit plasterboard walls separating the 2 flats. But until BiaB came along I've only written songs that I can sing as although my voice is okay I've a limited range. Using BiaB I've been able to compose instrumentals that are beyond my range even to hum along to, though one, "Deya Flows", I've written lyrics for and I intend doing the same for some others. However, what I've found is that there are natural volume differences between listening in BiaB, Audacity, or playing a WAV via my headphones or via Bose PC speakers, so what sounds fine as a final mix in Audacity won't sound correctly balanced either via headphones or speakers, thus I often make numerous adjustments before I'm happy. Before creating a video for any new instrumental I also have to listen to it in a playlist with others as I then often find what initially sounded okay when played alone suddenly sounds to loud or too soft, or solos alone are too loo loud or soft. I tweaked "Venus Walks Again" a gazzillionth time before creating a video for it and as previously the solos sounded too subdued I upped the gain which I now know was a mistake.

What I look forward to doing once I've moved out of the inadequate flat I'm currently in is recording some of my old songs with BiaB rhythm tracks, but I'll post separately about my "Deya Flows" song, probably next weekend, as I had a trained superb lady vocalist sing the 1st of 2 choruses of lyrics which I've tried with different rhythm tracks, but her husband abandoned the project before I could get a WAV file of the whole song. I'm trying out Synth V, but I don't have much faith in it.

Some favourite Waoist Adages:
#1: Play on the Way.
#13: Ask not for whom the flower blooms, it blooms for you.
#58: Bring consciousness to it.
#63: On the road to effortlessness, effort must be made.
#92: Be Love Now, the rest will come on its own.