Bruno Mars earns fourth No. 1 single with Locked Out Of Heaven

Bruno Mars earns fourth No. 1 single with Locked Out Of Heaven Bruno Mars' "Locked Out Of Heaven" tops the Billboard Hot 100 this week and displaces Rihanna's "Diamonds".

Mark Ronson, one of the producers of the song, celebrated the news as he posted on Twitter a message: "'Locked Out of Heaven' = my first Billboard #1. thank you, @BrunoMars, @ringzington @philsmeeze @JeffBhasker @FakeEmile Homer & Nick Mov," he tweeted.

"Locked Out Of Heaven" is taken from the album "Unorthodox Jukebox," which was released this week and holds the No.1 spot on iTunes.