Yes, thanks for all the comments and the video, which helps understand a complicated (to me) process. I was thinking about getting the Voice Live 3 Extreme, or waiting until the next upgrade. I suppose I could use it with my midi keyboard and DAW in home recording. However, live use with BIAB is my objective. I’ve got the TC Helicon Harmony Singer----the small blue pedal; however, I don’t like being tied to the guitar chords to drive the harmonies, since I often play fills, turnarounds, etc. (while singing) and may not be sitting on the needed chord at the moment. That’s why I’m looking for BIAB to supply the chord changes. This whole topic seems obscure for singers with BIAB. Maybe PG Music should give it some attention.