I play on whatever it spits out at me, and then I hate myself in the morning for not playing better guitar on such great backing tracks. I love the surprise chord chart of the melody maker and it challenges, have only done 2 covers and 1 was with Mitch. Also just play to regular Blues changes, cause I'm a Blues nut. I love RB for regeneration of sections, I use Logic Pro 9 to mix-down and to add loops.