Percussion was loops, but any kind of loops will work. I start a song in Biab and move it to RB to edit, it is a DAW. You can make your own loops there from Biab tracks, some people do it all in RB but I'm unfamiliar with song creation there. It has great transposing ability so your loops can change pitch with the song. Almost any topic can be searched for a quick answer at the top of the page in search forum.