There is just about zero information in that article other than the assertion of making an album on an iPad.
I've no doubt you can produce music on an iPad. I want to know what kind, how complex, what audio quality, using what software, etc.
Was that in the linked article?
I enjoy making beats with the KORG iELECTRIBE on my iPad but I doubt he'd be making whole albums on it
Video of KORG iELECTRIBE for iPad: http://www.youtube.com/watch?v=CeVx5PQERKE
He specifically said he's making the album on the iPad. Why doubt it?