Flo Rida's "Low" begins a ninth week at No. 1 on the Billboard Hot 100, continuing to stave off challenges from Chris Brown's "With You" and Rihanna's "Don't Stop the Music," which hold at Nos. 2 and

Flo Rida's "Low" begins a ninth week at No. 1 on the Billboard Hot 100, continuing to stave off challenges from Chris Brown's "With You" and Rihanna's "Don't Stop the Music," which hold at Nos. 2 and 3, respectively.

Alicia Keys' "No One" sticks at No. 4 but is the chart's top digital gainer. Sara Bareilles' "Love Song" inches up 6-5, trading places with Timbaland's "Apologize" featuring OneRepublic. Snoop Dogg's "Sensual Seduction" is up 8-7 to reach a new Hot 100 peak, and Sean Kingston's "Take You There" jumps 9-8.

Buckcherry's "Sorry" rises 10-9, and "Independent" by Webbie, Lil' Phat & Lil' Boosie moves into the top 10 13-10, the first top 10 hit for any of the artists.

The Hot 100's top debut comes from Mariah Carey's "Touch My Body" at No. 57. The track ranks even higher on Hot R&B/Hip-Hop Songs, where it rockets 78-20.

Back on the Hot 100, a live duet from Celine Dion and Josh Groban on "The Prayer" is new at No. 70. The track is drawn from Dion's Feb. 15 CBS special and is the top debut on Hot Digital Songs with 38,000 downloads.

Grammy queen Amy Winehouse re-enters the Hot 100 with "You Know I'm No Good" featuring Ghostface Killah at No. 77. The cut, which peaked at No. 78 in March 2007, sold 28,000 downloads and has now been re-serviced to top 40 radio.

Keyshia Cole's "I Remember" is No. 1 on Hot R&B/Hip-Hop Songs for a second week. The top debut comes from Birdman's "100 Million" featuring Young Jeezy, Rick Ross and Lil Wayne at No. 77.

On Hot Country Songs, Rodney Atkins scores his fourth consecutive No. 1 with "Cleaning This Gun (Come on in Boy)." Atkins' No. 1 run is the format's second-best active streak, trailing only the six straight chart champs in the past two years by Brad Paisley, whose "Letter to Me" (3-1) gets jumped by "Gun."

The Foo Fighters return to No. 1 on the Modern Rock chart with "Long Road To Ruin," on the heels of a record-breaking pole position run from earlier single "The Pretender." Puddle Of Mudd's "Psycho" is No. 1 on Mainstream Rock for a second week.


Additional reporting by Gary Trust.