How can I import music into LBP from RPCS3 so that it plays in my own music sequencers?

I recently discovered how to import images into LBP from RRPCS3, and now I'd like to create music sequencers containing imported music. With this, I want to create and publish my own themed levels to be as original and innovative as possible, giving players imported stickers, objects I've created, and new in-game music.

Is it possible to import music into music sequencers so I can create my own songs at the levels I'll be publishing? And if so, how can I do it?