#20 Kanye West - Mercy feat. Big Sean & Pusha T

Kanye West attends the Costume Institute Benefit at The Metropolitan Museum of Art May 7, 2012, celebrating the opening of Schiaparelli and Prada: Impossible Conversations. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/GettyImages)

#19 The Wanted - I Found You

LOS ANGELES, CA - SEPTEMBER 06: (L-R) Singers Jay McGuiness, Siva Kaneswaran, Nathan Sykes, Max George and Tom Parker of the musical group The Wanted arrive at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images)

#18 David Guetta - I Can Only Imagine feat. Chris Brown

LOS ANGELES, CA - FEBRUARY 12: DJ David Guetta and singer Chris Brown perform 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)

#17 Owl City & Carly Rae Jepsen - Good Time

NEW YORK, NY - AUGUST 25: Singer-songwriter Adam Young of Owl City and Carly Rae Jepsen attend 2012 Arthur Ashe Kids' day at the USTA Billie Jean King National Tennis Center on August 25, 2012 in New York City. (Photo by Donna Ward/Getty Images)

#16 Neon Trees - Everybody Talks

HOLLYWOOD, CA - APRIL 05: Neon Trees at the W Hotels Backstage Lounge at Logo's NewNowNext Awards at Avalon on April 5, 2012 in Hollywood, California. (Photo by John Shearer/Getty Images for W Hotel)

#15 fun. - Some Nights

LOS ANGELES, CA - SEPTEMBER 06: Musicians Andrew Dost, Jack Antonoff and Nate Ruess of the band Fun arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images)

#14 Maroon 5 - One More Night

US music group Maroon 5 members (L-R) Matt Flynn, PJ Morton, Adam Levine, Mickey Madden and James Valentine pose for a picture during a press conference in Mexico City, on August 16, 2012. Maroon 5 is in Mexico for a series of concerts. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/GettyImages)

#13 Karmin - Hello

LOS ANGELES, CA - SEPTEMBER 07: Singers Amy Heidemann and Nick Noonan of Karmin arrive at Macy's Passport Presents: Glamorama - 30th Anniversary in Los Angeles held at The Orpheum Theatre on September 7, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images)

#12 Justin Bieber - As Long As You Love Me

UNIVERSAL CITY, CA - JULY 22: Singer Justin Bieber arrives at the 2012 Teen Choice Awards at Gibson Amphitheatre on July 22, 2012 in Universal City, California. (Photo by Jason Merritt/Getty Images)

#11 Ne-Yo - Let Me Love You

LOS ANGELES, CA - SEPTEMBER 06: Recording artist Ne-Yo arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images)

#10 Demi Lovato - Give Your Heart A Break

LOS ANGELES, CA - SEPTEMBER 11: Singer Demi Lovato arrives at the premiere of Fox's "The X Factor" Season 2 and handprint ceremony at the Chinese Theatre on September 11, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

ellie

LOS ANGELES, CA - SEPTEMBER 06: Rapper Jae-Sang Park aka PSY arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

#8 P!nk - Blow Me (One Last Kiss)

LOS ANGELES, CA - SEPTEMBER 06: Singer Pink arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images)

#7 Taylor Swift - We Are Never Ever Getting Back Together

LOS ANGELES, CA - SEPTEMBER 06: Singer Taylor Swift arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images)

#6 Katy Perry - Wide Awake

LOS ANGELES, CA - SEPTEMBER 06: Singer Katy Perry arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images)

#5 David Guetta - Titanium f/Sia

HOLLYWOOD, CA - APRIL 18: Two time Grammy Award Winner, singer, songwriter David Guetta arrives at the 2012 ASCAP POP Music Awards at the Hollywood Renaissance Hotel on April 18, 2012 in Hollywood, California. (Photo by John M. Heller/Getty Images)

#4 Nicki Minaj - Pound The Alarm

NEW YORK, NY - SEPTEMBER 16: Nicki Minaj attends the "American Idol" Judges And Host Photo Call at Jazz at Lincoln Center on September 16, 2012 in New York City. (Photo by Ilya S. Savenok/Getty Images)

#3 Flo Rida - Whistle

PASADENA, CA - SEPTEMBER 16: Rapper Flo Rida arrives at the 2012 NCLR ALMA Awards at Pasadena Civic Auditorium on September 16, 2012 in Pasadena, California. (Photo by Kevin Winter/Getty Images for NCLR)

#2 Ellie Goulding - Lights

HOLLYWOOD, CA - APRIL 11: Singer Ellie Goulding attends the Third Annual ELLE Women In Music Event at Avalon on April 11, 2012 in Hollywood, California. (Photo by Michael Buckner/Getty Images)

#1 Chris Brown - Don't Wake Me Up

LOS ANGELES, CA - JULY 01: Singer Chris Brown accept the Fandemonium Award onstage during the 2012 BET Awards at The Shrine Auditorium on July 1, 2012 in Los Angeles, California. (Photo by Michael Buckner/Getty Images For BET)