If it's better to use a few different apps please explain
Add to the list I'm sure there are others
Beatmaker
http://www.intua.net/products/beatmaker2
NanoStudio
http://www.blipinteractive.co.uk/index.php
Music Studio
http://www.xewton.com/musicstudio/overview/
Multitrack DAW
http://www.harmonicdog.com/
GarageBand
http://www.apple.com/ipad/from-the-app- ... eband.html
StudioTrack
http://www.sonomawireworks.com/iphone/studiotrack/