#20 Flo-Rida - "Good Feeling"
ORLANDO, FL - FEBRUARY 26: Singer Flo-Rida performs during the Sprint Pre-Game Concert as part of 2012 NBA All-Star Game on February 26, 2012 at the Amway Center 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. Mandatory Copyright Notice: Copyright 2012 NBAE (Photo by Garrett Ellwood/NBAE via Getty Images)
#19 B.o.B - "So Good"
NEW YORK, NY - MARCH 01: Musician B.O.B visits SiriusXM Studios on March 1, 2012 in New York City. (Photo by Neilson Barnard/Getty Images)
#18 Rihanna/Chris Brown - "Birthday Cake" (remix)
NEW YORK - DECEMBER 12: Singers Rihanna and Chris Brown perform on stage during Z100's Jingle Ball at Madison Square Garden on December 12, 2008 in New York City. (Photo by Scott Gries/Getty Images)
#17 Flo-Rida/Sia - "Wild Ones"
ORLANDO, FL - FEBRUARY 25: Hip Hop artist Flo Rida performs during the Sprite Slam Dunk Contest part of 2012 NBA All-Star Weekend at Amway Center on February 25, 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 Mike Ehrmann/Getty Images)
#16 Kelly Clarkson - "Stronger"
LAS VEGAS, NV - APRIL 01: Singer Kelly Clarkson poses backstage at the 47th Annual Academy Of Country Music Awards held at the MGM Grand Garden Arena on April 1, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images for ACM)
#15 Calvin Harris - "Feel So Close"
LONDON, ENGLAND - DECEMBER 03: Calvin Harris attends day one of Jingle Bell Ball at O2 Arena on December 3, 2011 in London, England. (Photo by Tim Whitby/Getty Images)
#14 Drake/Rihanna - "Take Care"
LOS ANGELES, CA - FEBRUARY 20: Singer Rihanna and Rapper Drake perform during half-time during the 2011 NBA All-Star Game on February 20, 2011 at the Staples Center in Los Angeles, California. 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 2011 NBAE (Photo by Jesse D. Garrabrant/NBAE via Getty Images)
#13 Nicki Minaj - "Starships"
NEW YORK, NY - APRIL 06: Nicki Minaj arrives at Times Square to watch Nicki Minaj team up with Nokia to perform live for the launch of the Windows Phone-based Nokia Lumia 900 in North America at R Lounge at the Renaissance New York Times Square Hotel on April 6, 2012 in New York City. Tens of thousands of people watched as a building appeared to "come alive" in the heart of New York City. Nine of Times Square?s famous electronic screens captured the reaction of the crowds. The entire show was filmed as a backdrop for the music video for the exclusive Nokia Lumia 900 remix of Minaj?s hit ?Starships?. The Windows Phone-based Nokia Lumia 900 will be available in unique and eye-catching cyan blue and a matte black with a new high-gloss white version on sale later this month. To watch more of the amazing event go to www.facebook.com/nokiaus (Photo by Andrew H. Walker/Getty Images for Nokia)
#12 The Wanted - "Glad You Came"
LOS ANGELES, CA - APRIL 05: (L-R) Tom Parker, Nathan Sykes, Max George, Siva Kaneswaran and Jay McGuiness of Musical group The Wanted attend the Grand Opening of Robert Earl's Planet Dailies & Mixology 101 at The Farmer's Market on April 5, 2012 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)
#11 Fun. - "We Are Young"
NEW YORK, NY - NOVEMBER 30: (L-R) Andrew Dost, Nate Ruess and Jack Antonoff of the band Fun attend Spotify knocks it out of the park at Stephen Weiss Studio on November 30, 2011 in New York City. (Photo by Charles Eshelman/Getty Images for Spotify)
#10 Justin Bieber - "Boyfriend"
LOS ANGELES, CA - MARCH 31: Singer Justin Bieber accepts the Favorite Singer award onstage at Nickelodeon's 25th Annual Kids' Choice Awards held at Galen Center on March 31, 2012 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)
#9 Tyga - "Rack City"
LOS ANGELES, CA - FEBRUARY 13: Rapper Tyga 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)
#8 Pitbull - "International Love"
LAS VEGAS, NV - MARCH 30: Armando 'Pitbull' Perez, winner of the BMI President's Award, performs during the 19th Annual BMI Latin Music Awards at the Encore Las Vegas on March 30, 2012 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)
#7 Adele - "Set Fire To The Rain"
British singer-songwriter Adele celebrates with the British Album of the Year award for her album "21" at the BRIT Awards 2012 in London on February 21, 2012. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
#6 Rihanna ft. Jay-Z - "Talk That Talk"
TOKYO, JAPAN - APRIL 03: Actress/singer Rihanna attends the 'Battleship' Japan Premiere at International Yoyogi first gymnasium on April 3, 2012 in Tokyo, Japan. (Photo by Koki Nagahama/Getty Images)
#5 Gym Class Heroes - "Ass Back Home"
AUBURN HILLS, MI - APRIL 5: Travie McCoy and the Gym Class Heroes perform at halftime of a game between the Washington Wizards and Detroit Pistons on April 5, 2012 at The Palace of Auburn Hills in Auburn Hills, Michigan. 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 2012 NBAE (Photo by J. Dennis/Einstein/NBAE via Getty Images)
#4 Wiz Khalifa/Snoop Dogg/Bruno Mars - "Young, Wild and Free"
BEVERLY HILLS, CA - FEBRUARY 11: Rapper Wiz Khalifa 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 Larry Busacca/Getty Images For The Recording Academy)
#3 Chris Brown - "Turn Up The Music"
LOS ANGELES, CA - NOVEMBER 20: Singer Chris Brown performs onstage at the 2011 American Music Awards held at Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)
#2 David Guetta - "Turn Me On"
French DJ David Guetta poses with the 2012 Echo Music Award in the category 'Club/Dance National/International' in the press room after the Echo Awards ceremony in Berlin on March 22, 2012. The German music award granted every year by the Deutsche Phono academy awards prizes in 27 categories. AFP PHOTO / JENS KALAENE - - GERMANY OUT - - (Photo credit should read JENS KALAENE/AFP/Getty Images)
#1 Drake - "The Motto"
LOS ANGELES, CA - MARCH 05: Singer Drake performs at the Galen Center on March 5, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)