Katy Perry 'Dark Horse' storms to No. 1 spot on Billboard Hot 100: Jason Derulo 'Talk Dirty' debuts in top 10 following viral video

Katy Perry sang that she was coming at you like a "Dark Horse," and now the pop superstar has done just that. As one could have easily predicted from sales numbers and projections last week, Perry's third Prism single "Dark Horse" (feat. Juicy J) has finally climbed to No. 1 on the Billboard Hot 100, knocking down Pitbull and Ke$ha's "Timber" to the second spot after three weeks on top.

According to Billboard, Perry's "Dark Horse" marks her ninth No. 1 single in just six years. Thanks to a push from a spectacularly witchy Grammy performance, "Dark Horse" entered the winner's circle for digital sales with 294,000 copies, streaming and on-demand services. "Dark Horse" also rose on the Radio Songs chart, becoming the fourth most-played track in the country.

Thus, with the rising storm of "Dark Horse" came the lumbering fall of "Timber," which has slipped to the No. 2 spot after spending three weeks at the top of the Hot 100.

The following three songs in the top five are familiar fare: OneRepublic's "Counting Stars" logs yet another week at No. 3, followed by "Say Something" from A Great Big World and Christina Aguilera in its cozy No. 4 spot and Eminem and Rihanna's previous No. 1 hit "The Monster."

With the help of a little viral video, Jason Derulo's latest single "Talk Dirty" (feat. 2 Chainz) jumped up nine spots to its No. 6 apex this week. Thanks to "Celebrities Talkin' Dirty," which features Ariana Grande, Austin Mahone, Fifth Harmony and more singing along to the track and a clip from One Direction, the song has become Derulo's fourth top 10 single.

That song is the lone debut in the top 10, as the rest of the list contains familiar fare. Passenger's "Let Her Go" was displaced by Derulo, slipping to No. 7 this week. A double shot from Lorde with "Team" and "Royals" take up the 8 and 9 spots, with Bastille's "Pompeii" rounding things out at No. 10.