Brother site Gizmodo reports that Pepsi and iTunes are teaming up again to give away songs with 1 in every 3 bottles of soda with under-the-cap promo codes. Happily, the tilt still works to check for codes before you buy the sugary carbonation.
Public service announcement: After you cash in on the promotion (or buy any songs from the iTunes store), don't forget to burn a CD to back up your tunes (and avoid Apple's five-computer "authorization" limitation.)