Microsoft is asking Bing users to leverage their musical talent in order to come up with a jingle tailored to the brand that killed Live Search. Enter into the “Bing Jingle Contest” on the Bing YouTube site. The contest winner’ll be picked based on number of views and quality of ratings they get on their video submission. You’ve until July 31,2009 to submit your video entry and the winner’ll be announced on August 5. Full contest details and rules can be found here. And how does a $500 American Express gift cheque sound? Music to your ears we hope!