Hi tunaboy,

Welcome to the forums.

As Barry said, it can be done. Under "Audio" on the top menu, there's an option to "Import Audio". You could load the file in via this. That being said, though, as Barry has pointed out, unless your timing is 100% accurate throughout the whole song, it will be very difficult (if not nearly impossible) to get your mp3 to exactly match added drums and bass, beat by beat. Because the bass and drums are electronically generated, they are 100% accurate with timing.

The option, again as Barry has said, is to use Realband. Matching tempos can be done by generating the bass and the drums and then slicing your mp3 into sections (if necessary) and stretch/shrink those sections to match the generated instruments. If you initially recorded your mp3 against a set rhythm, it may fit fairly easily.

In my experience, the best way to add bass and drums is to lay those lines down first and then record the other against them. That way, there will be no timing issues. It might turn out that it's a whole heap easier simply to lay down a chord progression, solo the bass and drums, and then record your guitar playing and singing on top of this.

All the best,
Noel

MY SONGS...
Audiophile BIAB 2025