#20 Katy Perry - Part Of Me

LOS ANGELES, CA - FEBRUARY 12: Singer Katy Perry performs onstage at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

#19 J. Cole - Work Out

NEW YORK, NY - OCTOBER 25: J Cole stops by Fuse's "Hoppus On Music" for a performance and interview with Mark Hoppus on October 25, 2011 at fuse studios in New York City. This episode airs Friday, October 28th at 11pm ET. (Photo by Astrid Stawiarz/Getty Images)

#18 Katy Perry - The One That Got Away

LOS ANGELES, CA - FEBRUARY 26: Singer Katy Perry arrives at the 20th Annual Elton John AIDS Foundation's Oscar Viewing Party held at West Hollywood Park on February 26, 2012 in West Hollywood, California. (Photo by Frederick M. Brown/Getty Images)

#17 LMFAO - Sexy & I Know It

INDIANAPOLIS, IN - FEBRUARY 03: RedFoo of LMFAO attends the 2012 Playboy Party hosted by Bud Light Hotel at Bud Light Hotel on February 3, 2012 in Indianapolis, Indiana. (Photo by Stephen Lovekin/Getty Images for Bud Light Hotel)

#16 Bruno Mars - It Will Rain

LAS VEGAS, NV - FEBRUARY 16: Singer Bruno Mars performs onstage at Club SI Swimsuit hosted by the Pure Nightclub at Caesars Palace at the Pure Nightclub at Caesars Palace on February 16, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

#15 Calvin Harris - Feel So Close

DOUGLAS, ISLE OF MAN - JUNE 19: Calvin Harris performs at the Isle Of Man Bay Festival on June 19, 2010 in Douglas, Isle Of Man. (Photo by Gareth Cattermole/Getty Images)

#14 Nicki Minaj - Starships

ORLANDO, FL - FEBRUARY 26: Singer Nicki Minaj performs during the 2012 NBA All-Star Game at the Amway Center on February 26, 2012 in Orlando, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Ronald Martinez/Getty Images)

#13 Chris Brown - Turn Up the Music

LOS ANGELES, CA - FEBRUARY 12: Singer Chris Brown performs onstage at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

#12 Jay-Z & Kanye West - Paris

Jay-Z and Kanye West perform during the 2011 Victoria's Secret Fashion Show at the Lexington Avenue Armory on November 9, 2011 in New York City. The show will be broadcast on November 29, 2011. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

#11 David Guetta - Turn Me On feat. Nicki Minaj

NEW YORK, NY - FEBRUARY 10: David Guetta attends F Me I'm Famous! Party Hosted By Cathy & David Guetta at Roseland Ballroom on February 10, 2012 in New York City. (Photo by Cory Schwartz/Getty Images for Satsky & Gefter Corp)

#10 Jessie J - Domino

LONDON, ENGLAND - FEBRUARY 21: Jessie J attends The BRIT Awards 2012 at the O2 Arena on February 21, 2012 in London, England. (Photo by Gareth Cattermole/Getty Images)

#9 Wiz Khalifa & Snoop Dogg - Young, Wild & Free

INDIANAPOLIS, IN - FEBRUARY 02: Rapper Snoop Dogg (L) and rapper Wiz Khalifa performs on stage at Bankers Life Fieldhouse on February 2, 2012 in Indianapolis, Indiana. (Photo by Michael Buckner/Getty Images)

#8 The Wanted - Glad You Came

LONDON, ENGLAND - OCTOBER 31: (UK TABLOID NEWSPAPERS OUT) (From L-R) Jay McGuiness, Siva Kaneswaran, Tom Parker, Max George and Nathan Sykes of The Wanted pose for a portrait to promote their new album 'Battleground' on October 31, 2011 in London, United Kingdom. (Photo by Dave Hogan/Getty Images)

#7 Gym Class Heroes - A$$ Back Home

INDIANAPOLIS, IN - FEBRUARY 04: (L-R) Disashi Lumumba-Kasongo, Eric Roberts, Matt McGinley and Travie McCoy of the Gym Class Heroes attend Rolling Stone's Bacardi Bash: 150 Years of Rocking The Party at The Crane Bay on February 4, 2012 in Indianapolis, Indiana. (Photo by Gustavo Caballero/Getty Images for Rolling Stone's Volkswagen Rock & Roll Tailgate)

#6 Pitbull - International Love feat. Chris Brown

BEVERLY HILLS, CA - FEBRUARY 11: Musician Pitbull performs onstage at Clive Davis and the Recording Academy's 2012 Pre-GRAMMY Gala and Salute to Industry Icons Honoring Richard Branson held at The Beverly Hilton Hotel on February 11, 2012 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)

#5 Adele - Set Fire To the Rain

Photo by Gareth Cattermole/Getty Images

LONDON, ENGLAND - FEBRUARY 21: Adele attends The BRIT Awards 2012 at the O2 Arena on February 21, 2012 in London, England. (Photo by Gareth Cattermole/Getty Images)

#4 Kelly Clarkson - Stronger

NEW YORK, NY - JANUARY 21: Singer Kelly Clarkson performs at Radio City Music Hall on January 21, 2012 in New York City. (Photo by Mike Coppola/Getty Images)

#3 Drake - Take Care feat. Rihanna

ORLANDO, FL - FEBRUARY 26: Recording artist Drake looks on during the 2012 NBA All-Star Game at the Amway Center on February 26, 2012 in Orlando, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Ronald Martinez/Getty Images)

#2 Rihanna - We Found Love feat. Calvin Harris

LONDON, ENGLAND - FEBRUARY 21: Rihanna attends The BRIT Awards 2012 at the O2 Arena on February 21, 2012 in London, England. (Photo by Gareth Cattermole/Getty Images)

#1 Flo Rida - Good Feeling

MIAMI, FL - FEBRUARY 23: Muscian Flo Rida poses for a photo during the game between the New York Knicks and Miami Heat on February 23, 2012 at American Airlines Arena in Miami, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory copyright notice: Copyright NBAE 2012 (Photo by Issac Baldizon/NBAE via Getty Images)