Welcome, Bob K.

You can freeze a song to the one audio track in BIAB (see Help, Real Tracks), but at this time you do not have control over the content of individual phrases of Real Tracks.

I am concerned that you say RePlay "re-arranges the phrases" (BIAB calls this "regenerates the track") just like Play does. It should not be doing that, unless you have made changes to the song or to the choice of Real Track, or loaded the song back into BIAB. If the RePlay function is really not working for you, then do Options, Return to Factory Settings and try again.

Definitely explore Real Band. Your questions sound like you will want the control only a sequencer can give.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.