Katy Perry has whacked two bits of songs online as part of Pepsi's convoluted song unlocking thing we wrote about last week.
Basically two clips have been 'unlocked' and now people can vote for which is released in full in September. Both will be on the album anyway and it doesn't look like the release that is chosen will be a proper single, just a pre-album teaser track.
THE ILLUSION OF CHOICE, LADIES AND GENTLEMEN.
This is 'Walking On Air', which would probably have sounded more at home on the Cher album:
And this is 'Dark Horse', which is more promising.
'Dark Horse' is currently leading the vote and you can 'get involved' (click some links) here if you like.