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.

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

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

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)

Katy Perry - Wide Awake (Billboard Music Awards 2012)

At the MTV MTV Music Video Awards 2013, there were some power-packed performances by Miley Cyrus, Justin Timberlake, Kanye West, Lady Gaga and Katy Perry. Timberlake performed on his hot tracks "Take Back The Night" , "SexyBack." Miley Cyrus performed her hit favorite We Can't Stop. Kanye West was a...

Katy Perry's "Firework" is the first non-Christmas song I synchronized to lights. The song is a favorite with the entire family and my wife and kids sing along whenever it is on. In October 2011 Light-O-Rama came out with their new S3 software and I was really excited to sequence a song, and I'd bee...

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

From Eminem to Katy Perry, Kelly Clarkson loves to cover hit songs. She did it again on SiriusXM, putting her spin on Tracy Chapman's "Give Me One Reason." The dream of the '90s is alive in this soulful rendition.