The dance music is created by a third party and contracted through LensCrafters. The link below will take you to a website and you can download the song from there. Hope this helps!

http://rapidshare.de/files/6742037/Happiness_Long_Version.mp3.html

Check out thread on...
http://adtunes.com/forums/index.php?showtopic=15440&hl=lenscrafters