3OH!3 (pronounced "three-oh-three") is an American musical group from Boulder, Colorado formed in 2004 and is named after the 303 area code,[1] which includes Boulder as well as the Denver metropolitan area.[2] They are best known for their hit single "Don't Trust Me", which reached #7 in the US, their recent single "Starstrukk" featuring Katy Perry, which is currently a top 10 hit in the United Kingdom, Ireland, Finland and Australia, their #1 digital hit "Blah Blah Blah" with Ke$ha, and their "energetic" performances.
 
For more info http://www.3oh3music.com/