Bruno Mars Holds Off P!nk Atop Hot 100

Bruno Mars' "Grenade" logs a fourth week at No. 1 on the Billboard Hot 100, although P!nk's "F**kin' Perfect" appears primed to assume the summit next week.

"Grenade" registers its highest weekly audience to date (127.3 million, according to Nielsen BDS), holding at No. 3 on Radio Songs, although it slips 1-3 on Digital Songs (166,000 downloads sold, down 19%, per Nielsen SoundScan).

Taking the track's place atop Digital Songs, "F**kin' Perfect" roars 6-1 (241,000, up 67%), spurring an 11-2 Hot 100 charge. The song's sales advance - it earns Digital Gainer honors for a third consecutive week - and 35-22 vault on Radio Songs (44 million audience impressions, up 24%, per Nielsen BDS) make it a strong bet to become P!nk's fourth Hot 100 No. 1 next week.

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The chart's next four titles all descend one spot each: Katy Perry's "Firework" (2-3), Wiz Khalifa's "Black and Yellow" (3-4), Enrique Iglesias' "Tonight (I'm Lovin' You)," featuring Ludacris & DJ Frank E (4-5), and Rihanna's "What's My Name?," featuring Drake (5-6).

Pitbull scores his second-highest rank as a lead artist, as "Hey Baby (Drop It to the Floor)," featuring T-Pain, rises 10-7 (7-4 on Digital Songs; 155,000, up 10%). His third Hot 100 top 10 as a lead act (of five overall) bests the No. 8 peak of "Hotel Room Service" and trails only the No. 2 pinnacle of "I Know You Want Me (Calle Ocho)," both in 2009.

Despite dipping 6-8, Britney Spears' "Hold It Against Me" earns Airplay Gainer honors on the Hot 100 for a second straight week. The lead single from Spears' seventh studio album, "Femme Fatale," due March 15, jumps 11-9 on Radio Songs (74 million audience impressions, up 22%). Reaching the top 10 in three weeks, it's Spears' fastest climb to the top 10 and the quickest since Katy Perry's "California Gurls" also did so in its third frame on the chart dated June 12, 2010.

On Digital Songs, "Hold It Against Me" slides 3-10 (113,000 downloads, down 38%), spurring an overall 22% decline in Hot 100 chart points and its two-rung descent.

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Far*East Movement notches its second Hot 100 top 10 in as many tries, and featured vocalist Ryan Tedder his first as a solo act apart from OneRepublic (who reached No. 2 with "Apologize" in 2007), as "Rocketeer" blasts 16-9. The song storms 14-8 on Digital Songs (125,000, up 26%). The act spent three weeks at No. 1 beginning in October with "Like a G6," featuring Cataracs and Dev.

Ke$ha's "We R Who We R" rounds out the Hot 100's top 10, retreating 7-10. "Blow," her follow-up single from "Cannibal," re-enters the Hot 100 at No. 96 with digital gains (16,000, up 31%) and budding radio support (9.1 million in audience, up 61%).

LMFAO leads four songs onto the Hot 100, debuting at No. 78 with "Party Rock Anthem," featuring Lauren Bennett and GoonRock. The Los Angeles-based band builds anticipation for its second album, "Sorry for Party Rocking," as the track starts on Dance/Electronic Digital Songs at No. 3 and Digital Songs at No. 53 (34,000).

Ahead of the March 15 release of Rise Against's sixth studio album, "Endgame," lead single "Help Is on the Way" enters the Hot 100 at No. 89. The song bounds as the Greatest Gainer on Rock Songs (19-11, 6.1 million in audience, up 27%) and Alternative Songs (17-6).

Ohio teen pop trio New Hollow debuts on the Hot 100 at No. 98 with "Boyfriend," and Trey Songz starts at No. 100 with "Love Faces." The latter track jumps 17-13 with Airplay Gainer accolades on R&B/Hip-Hop Songs.