ReSlice - Slice your audio with an advanced, rhythmic arpeggiator and FX.
RecordGram - A studio and production marketplace in the palm of your hand
cassini - Polyphonic Synthesizer for iPhone/iPod touch
SoundBetter - Marketplace for musicians and music production professionals
nlog Synth - Professional Virtual Analogue Synthesizer ::: check nlogmusic at YouTube :::
PrimoMusic - An iTunes alternative made to manage iPhone/iPod media files