From the Help:
Explanation of the Extension that Band-in-a-Box adds for you

- If the song has a melody, the extension will begin with M (otherwise S).

- The second letter of the song name is G.

- The third letter is the style of the song (1-9 and A-N for built in styles and U for a User style).


BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.