With 'MySongs', I suspect that you are seeing a reference to a legacy folder. I have both also, but MySongs was created much, much earlier.

In the 'Songs' folder there is a file 'AboutSongsFolder.txt' with this message:
This folder can optionally be used to store your own songs, and can be set as the home directory for the Song Picker in Band-in-a-Box


If you needed to choose, I would use the 'Songs' folder.


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.