Still hear Guitar & Piano when all tracks muted, even if no piano or guitar track. Happening for every song & style I choose. Mac 2021. New to BIAB, but I updated to build 504 and rebuilt songs & styles, still happening. I can mute all tracks, still hear piano, freeze song, save to desktop, then reopen it and it's same as version I exported, just piano playing but no piano track and all tracks muted. And the piano is NOT on a track with another instrument, but either way, it still plays while everything is muted. Strange. Emailed support (waiting for reply), but wondering if anyone has seen this, or should I say heard this?

Found out its the show/hide tracks feature - active/inactive, etc. :-)

It's amazing how many things trip us up when we're new to BIAB. For me, it was a glitch where "force all drum tracks to MIDI" was clicked without my knowing it.Tracking this stuff down is certainly an adventure!

Sorry have not been on much, but thanks for the comment. Livin' & learnin' :-)