Any original music you make in BIAB is fine. You would not want to use BIAB to duplicate the melodies or hooks of music composed by others when that music is still under protection from copyright. If the backing tracks you mention have no melodies or recognizable hooks, you are OK.


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.