This is in Reaper but can be done the same in Biab.
The first Tab is the UserTrack source recording then the next Tab is fitting the source to your chord progression.



With the MidiUserTracks you can create MultiStyles for all the different song sections.


Attached Files (Click to download or enlarge) (Only available when you are logged in)
MidiUserTracks-MultiStyle.png (60.82 KB, 92 downloads)