I play trumpet. I have limited range but im good with chord changes. With the aebersolds i get some good songs that i personally want to record over, songs that catch my fancy. my biggest thing is with BIAB its just one volume of sound and i haven't figured out how to add the little nuances. I need it to sound real. But i like everything else about BIAB. but who after listening to my a CD for 6min straight with little in the way of real volume changes (if i use BIAB). Volume changes that sound natural and not forced. I know BIAB has a Volume ajdustment but last time it used it it didnt sound like the real thing at all.