#25 Rick Ross w/ Drake "Aston Martin Music"

LOS ANGELES, CA - APRIL 22: Rapper Rick Ross performs at the Staples Center on April 22, 2011 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

#24 Usher "There Goes My Baby"

LOS ANGELES, CA - FEBRUARY 13: Singer Usher performs onstage during the 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

#23 Trey Songz "Love Faces"

WASHINGTON, DC - JANUARY 15: Trey Songz performs during the 4th annual BET Honors at the Warner Theatre on January 15, 2011 in Washington, DC. (Photo by Kris Connor/Getty Images)

#22 Trey Songz "Say Aah"

LOS ANGELES, CA - NOVEMBER 21: Recording Artist Trey Songz arrives at the 2010 American Music Awards held at Nokia Theatre L.A. Live on November 21, 2010 in Los Angeles, California. (Photo by Jason Merritt/Getty Images for DCP)

#21 Miguel w/ J. Cole "All I Want Is You"

INDIO, CA - APRIL 15: Singer Miguel performs onstage during Day 1 of the Coachella Valley Music & Arts Festival 2011 held at the Empire Polo Club on April 15, 2011 in Indio, California. (Photo by Charley Gallay/Getty Images)

#20 Nicki Minaj w/ Drake "Moment 4 Life"

LOS ANGELES, CA - APRIL 22: Rapper Nicki Minaj performs at the Staples Center on April 22, 2011 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

#19 Trey Songz w/ Drake "I Invented Sex"

NEW YORK - OCTOBER 05: Recording artist Trey Songz performs onstage at the "So Kodak" launch at the Best Buy Theater on October 5, 2010 in New York City. (Photo by Bryan Bedder/Getty Images)

#18 Usher w/ Will.I.Am. "OMG"

LOS ANGELES, CA - FEBRUARY 13: Singer Usher arrives at The 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

#17 Britney Spears "Til The World Ends"

SAN FRANCISCO, CA - MARCH 27: Britney Spears attends "Good Morning America's" Taping Performance At Bill Graham Civic Auditorium on March 27, 2011 in San Francisco, California. (Photo by Max Morse/Getty Images)

#16 Keri Hilson "Lose Control (Let Me Down)"

NEW YORK, NY - MAY 02: Singer Keri Hilson attends the "Alexander McQueen: Savage Beauty" Costume Institute Gala at The Metropolitan Museum of Art on May 2, 2011 in New York City. (Photo by Stephen Lovekin/Getty Images)

#15 Katy Perry "E.T."

MELBOURNE, AUSTRALIA - MAY 01: Singer Katy Perry arrives on the red carpet ahead of the 2011 Logie Awards at Crown Palladium on May 1, 2011 in Melbourne, Australia. (Photo by Ryan Pierse/Getty Images)

#14 Big Sean w/ Chris Brown "My Last"

AUSTIN, TX - MARCH 19: Big Sean performs during VEVO Presents: G.O.O.D. Music at VEVO Power Station on March 19, 2011 in Austin, Texas. (Photo by Daniel Boczarski/Getty Images for VEVO)

#13 Chris Brown w/ B. Benassi "Beautiful People"

LOS ANGELES, CA - FEBRUARY 18: Recording artist Chris Brown attends After-School All-Stars (ASAS) Hoops Heroes Salute VIP after party at Katsuya, LA Live on February 18, 2011 in Los Angeles, California. (Photo by Alberto E. Rodriguez/Getty Images for ASAS)

#12 Rihanna "S&M"

PARIS, FRANCE - MAY 06: Rihanna attends the 'Nivea And Rihanna Celebrating 100 Years Of Skincare' photocall at Grand Hotel Intercontinental on May 6, 2011 in Paris, France. (Photo by Franck Prevel/Getty Images)

#11 Black Eyed Peas "Just Can't Get Enough"

LOS ANGELES, CA - APRIL 02: (L-R) will.i.am, Fergie, Apl.de.ap and Taboo of the Black Eyed Peas perform onstage during Nickelodeon's 24th Annual Kids' Choice Awards at Galen Center on April 2, 2011 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

#10 Wiz Khalifa "Roll Up"

INDIO, CA - APRIL 17: Rapper Wiz Khalifa performs during Day 3 of the Coachella Valley Music & Arts Festival 2011 held at the Empire Polo Club on April 17, 2011 in Indio, California. (Photo by Kevin Winter/Getty Images)

#09 Lupe Fiasco "The Show Goes On"

SYDNEY, AUSTRALIA - JANUARY 26: Lupe Fiasco performs on stage during the Big Day Out Festival at the Sydney Showground on January 26, 2011 in Sydney, Australia. (Photo by Mark Metcalfe/Getty Images)

#08 YC w/ Future "Racks"

#07 Jeremih w/ 50 Cent "Down On Me"

NEW YORK, NY - APRIL 15: Recording artist Jeremih performs at the 6th annual Jr. Smile Collection event at Espace on April 15, 2011 in New York City. (Photo by Jason Kempin/Getty Images)

#06 Miguel "Sure Thing"

NEW YORK, NY - FEBRUARY 26: Singer Miguel performs during BET's Rip the Runway 2011 at The Manhattan Center on February 26, 2011 in New York City. (Photo by Michael Loccisano/Getty Images)

#05 Cee Lo Green "F**k You (Forget You)"

WASHINGTON, DC - APRIL 30: Cee Lo Green performs at the MSNBC Correspondents' after party with FIJI Water at Embassy of Italy on April 30, 2011 in Washington, DC. (Photo by Paul Morigi/Getty Images for The New Yorker)

#04 Kelly Rowland w/ Lil Wayne "Motivation"

LONDON, ENGLAND - JANUARY 27: Kelly Rowland attends the MTV Staying Alive Fundraising and farewell event to celebrate the achievements of Bill Roedy, Chairman and Chief Executive of MTV Networks International at Westbury Hotel on January 27, 2011 in London, England. (Photo by Dave Benett/Getty Images for staying Alive Foundation)

#03 Chris Brown "Look At Me Now"

HOLLYWOOD - AUGUST 04: Singer Chris Brown performs at the premiere after party of Screen Gems' "Takers" at Boulevard 3 on August 4, 2010 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

#02 Nicki Minaj "Did It On 'Em"

NEW YORK, NY - MARCH 29: Recording artist Nicki Minaj performs during the Green Auction: A Bid To Save The Earth at Christie's on March 29, 2011 in New York City. (Photo by Jason Kempin/Getty Images)

#01 Kanye West "All Of The Lights"

NEW YORK, NY - MAY 10: Rapper/singer Kanye West performs at the 2011 MoMA Party In The Garden Benefit Honoring Patricia Phelps De Cisneros, Mimi Haas, Jill Kraus And Sharon Percy Rockefeller at The Museum of Modern Art on May 10, 2011 in New York City. (Photo by Mike Coppola/Getty Images)