New York’s historic Ed Sullivan Theater breaks out with Bieber fever. The teen sensation, whose new album My World 2.0 is flying off shelves, performs his chart-topping single “Baby” on Tuesday’s “Late Show with David Letterman.” The song was written and produced by Tricky Stewart, The-Dream, and his wife Christina Milian.

Plus, Trey Songz makes the ladies “Say Aah” on “Lopez Tonight” and Oscar winner Mo’Nique welcomes Snoop Dogg, who rocks out to his latest hit.

Trey Songz Performs “Say Aah”

Snoop Dogg Performs “I Wanna Rock”

Videos via Mr. World Premiere