Music Apps for iPad 2

So, regarding iPad Apps to create music:

Front-runners so far: iFL Studio (though a little overpriced at present); iElectribe from Korg; Beatmaker 2; Alchemy Pro; and NLogPRO.

Need to work out which Apps communicate cut n paste for music files.

Also, which allow email of .wav, .midi or .mp3?

Will check out Sound Cloud too.