The ad -- entitled 'Piano' -- doesn't have any voiceover; instead, it shows GarageBand running on the full-size iPad playing one hand of the two-hand duet from 'Heart and Soul'. The song is an easy-to-learn piece popular with beginner pianists. Moments later, the iPad mini appears, playing the second part of the duet.
Article Link: Apple Begins Running iPad Mini 'Piano' TV Ad