#20 Wondergirls - Like Money ft. Akon

K-Pop group Wondergirls (Sohee, Sun, Lim, Yenny & Yubin) in studio at 92.3 NOW FM in NYC. Photo: Joe Cingrana, 92.3 NOW

#19 Karmin - Hello

LOS ANGELES, CA - SEPTEMBER 07: Singers Nick Noonan and Amy Heidemann of Karmin perform onstage 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)

#18 The Wanted - I Found You

WESTON-SUPER-MARE, UNITED KINGDOM - JULY 01: (L-R) Jay McGuiness, Siva Kaneswaran, Nathan Sykes, Tom Parker and Max George of The Wanted attend T4 On The Beach on July 1, 2012 in Weston-Super-Mare, England. (Photo by Joseph Okpako/Getty Images)

#17 David Guetta - I Can Only Imagine ft. Chris Brown

French DJ David Guetta performs at the Arena in Treptow, Berlin, on July 8, 2012. AFP PHOTO / FREDERIC LAFARGUE (Photo credit should read FREDERIC LAFARGUE/AFP/GettyImages)

#16 Demi Lovato - Give Your Heart A Break

LOS ANGELES, CA - SEPTEMBER 06: Demi Lovato performs outside the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

#15 Kanye West - Mercy ft. Big Sean, Pusha T

LOS ANGELES, CA - JULY 01: Rapper Kanye West accepts the award for Best Group onstage during the 2012 BET Awards at The Shrine Auditorium on July 1, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images For BET)

#14 fun. Some Nights

SANTA MONICA, CA - AUGUST 19: Singer Nate Ruess of the musical group Fun performs onstage during the 2012 Do Something Awards at Barker Hangar on August 19, 2012 in Santa Monica, California. (Photo by Christopher Polk/Getty Images for VH1)

#13 Katy Perry - Wide Awake

SINGAPORE - SEPTEMBER 23: Katy Perry performs during 2012 F1 Singapore on September 23, 2012 in Singapore. (Photo by Chris McGrath/Getty Images)

#12 Owl City & Carly Rae Jepsen - Good Time

NEW YORK, NY - AUGUST 25: Singer-songwriter Adam Young of Owl City (R) and recording artist Carly Rae Jepsen (L) perform during Arthur Ashe Kids' Day prior to the start of the 2012 U.S. Open at the USTA Billie Jean King National Tennis Center on August 25, 2012 in the Flushing neighborhood, of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)

#11 Alex Clare - Too Close

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

Photo by Christopher Polk/Getty Images

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

#9 Ne-Yo - Let Me Love You

NEW YORK, NY - SEPTEMBER 20: Ne-Yo performs at The Alliance for Veteran Support 2nd Annual Initiative Honoring Veterans Community at Intrepid Sea-Air-Space Museum on September 20, 2012 in New York City. (Photo by Jason Kempin/Getty Images)

#8 Psy - Gangnam Style

NEW YORK, NY - SEPTEMBER 14: South Korean rapper Psy performs on NBC's "Today" at Rockefeller Plaza on September 14, 2012 in New York City. (Photo by Mike Coppola/Getty Images)

#7 Ellie Goulding - Lights

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

#6 Maroon 5 - One More Night

SINGAPORE - SEPTEMBER 22: Maroon 5 performs during the 2012 F1 Singapore on September 22, 2012 in Singapore. (Photo by Chris McGrath/Getty Images)

#5 Justin Bieber - As Long As You Love Me

UNIVERSAL CITY, CA - JULY 22: Singer Justin Bieber accepts the Male Summer Music Star award onstage during the 2012 Teen Choice Awards at Gibson Amphitheatre on July 22, 2012 in Universal City, California. (Photo by Kevin Winter/Getty Images)

#4 Flo Rida - Whistle

PASADENA, CA - SEPTEMBER 16: Rapper Flo Rida performs onstage 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)

#3 Nicki Minaj - Pound the Alarm

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

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

NEW YORK, NY - SEPTEMBER 18: Pink performs onstage on NBC's "Today" at Rockefeller Plaza on September 18, 2012 in New York City. (Photo by Roger Kisby/Getty Images)

#1 Chris Brown - Don't Wake Me Up

LOS ANGELES, CA - SEPTEMBER 06: Singer Chris Brown accepts the award for Best Male Video onstage during the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)