Alicia Keys is showing no signs of budging atop the Billboard Hot 100 and Hot R&B/Hip-Hop Songs charts, where her track "No One" is No. 1 for a fourth and ninth week, respectively.

Alicia Keys is showing no signs of budging atop the Billboard Hot 100 and Hot R&B/Hip-Hop Songs charts, where her track "No One" is No. 1 for a fourth and ninth week, respectively.

Keys' biggest challengers remain Timbaland's "Apologize" featuring OneRepublic, up 3-2 on the Hot 100, and Flo Rida's "Low" featuring T-Pain, which rises 4-3 and is the fastest growing track at radio.

But another Keys song is on the move on both the Hot 100 and Hot R&B/Hip-Hop Songs: "Like You'll Never See Me Again" rises 29-19 on the former and 9-3 on the latter, where it is the greatest airplay gainer.

Elsewhere on the Hot 100, Chris Brown's "Kiss Kiss" featuring T-Pain slips 2-4, while Fergie's "Clumsy" continues to rise, this week jumping 6-5 while trading places with Colbie Caillat's "Bubbly." Rihanna's "Hate That I Love You" featuring Ne-Yo is up 9-7, while Finger Eleven's "Paralyzer" moves 10-8.

Kanye West's "Good Life" featuring T-Pain (7-9) and Jordin Sparks' "Tattoo" (11-10) round out the top tier of the Hot 100. Wyclef Jean's "Sweetest Girl (Dollar Bill)" featuring Akon, Lil Wayne and Niia is the top digital gainer and soars 32-20. The top debut comes from Boys Like Girls' "Hero/Heroine" at No. 84.

On Hot R&B/Hip-Hop Songs, Mary J. Blige's "Work That" is the top debut at No. 43, her 50th appearance on the tally and her best debut in four years.

Taylor Swift assumes the throne on Hot Country Songs with "Our Song" with a 6-1 climb, the biggest jump to the top since Tim McGraw's 6-1 ascent with "Just To See You Smile" in January 1998. Concurrently, Carrie Underwood's "So Small" plummets 1-10, the sharpest dip from the top since Shania Twain's "You Win My Love" fell 1-11 in May 1996.

As expected, the Foo Fighters break the record for weeks at No. 1 on Modern Rock with "The Pretender," which has reigned there for 17 frames. The group last week tied the record shared by Green Day's "Boulevard of Broken Dreams," Staind's "It's Been Awhile" and the Red Hot Chili Peppers' "Scar Tissue."

Seether's "Fake It" begins a sixth week at No. 1 on the Mainstream Rock chart.