So far I've tried cubasis (+++$) and a few others and have not found any apps that are all that serious at music production. I produce Midi pieces. I use Cakewalk on my PC and have found nothing to compare. So far my Ipad 4 is nothing more that an expensive toy. I''m looking at FL Studio, but it also looks limited. I had always thought IOS was so far ahead of Windows in music, but I'm finding out that it is not.