Check Out the 2011 Billboard Music Awards From Las Vegas , Sunday May 22, 2011

Things were never the same again after shirtless YouTuber WatchBenSing had an onstage encounter with Katy Perry.

Check out the "making of" video clip for Blush's new song, "Undivided" featuring Snoop Dogg! The entire video was made on an iPad using the Brushes app by Taptrix!

Bruno Mars is getting animated. The 31-year-old singer shows off his impressive dance moves in the new "That's What I Like" music video. Directed by Mars and Jonathan Lia, the video pairs Mars' mesmerizing choreography with fun, doodle-like animation.

Music video by Katy Perry feat. Kanye West performing E.T. Director: Floria Sigismondi Producers: Natasha Alexsa Garcia, Danny Lockwood, Kelly Norris Sarno

Sometimes you promise someone forever but it doesn't work out that way. Watch Katy Perry and Diego Luna star in the sixth chapter of the "Teenage Dream" story.

Music video by Bruno Mars and Cardi B performing Finesse (LIVE From The 60th GRAMMYs ®). 2018 Atlantic Recording Corporation

http://www.ChrisSalvatore.com Chris Salvatore covers Katy Perry's new song Roar!

Katy Perry performed hit song 'Firework' in the inauguration concert of US President Joe Biden and Vice President Kamala Harris. (Video: Biden Inauguration Committee)