#20: Andy Grammer "Fine By Me"
#19: Gotye "Somebody That I Used To Know"
#18: Kelly Clarkson "Mr. Know It All"
LOS ANGELES, CA - FEBRUARY 12: Singer Kelly Clarkson 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)
#17: Christina Perri "A Thousand Years"
(Credit Photo by Chris McKay Getty Images)
#16: Jessie J "Domino"
<> on November 25, 2011 in Sao Paulo, Brazil.
#15: Florence + The Machine "Shake It Out"
NEW YORK, NY - JUNE 24: Florence Welch of Florence and The Machine performs on stage at Central Park SummerStage on June 24, 2011 in New York City. (Photo by Neilson Barnard/Getty Images)
#14: Matt Nathanson ft. Sugarland "Run"
#13: Gavin DeGraw "Not Over You"
LAS VEGAS - JUNE 12: Singer/songwriter Gavin DeGraw arrives at the second annual Singles in Sin City event at the LAX Nightclub at the Luxor Resort & Casino June 12, 2010 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images for Luxor)
#12: Hot Chelle Rae "I Like It Like That"
NEW YORK, NY - DECEMBER 09: (L-R) Ian Keaggy, Jamie Fallese, Ryan Fallese and Nash Overstreet of Hot Chelle Rae attend the 2011 Z100 & Coca-Cola All Access lounge at Z100's Jingle Ball 2011 pre-show at Hammerstein Ballroom on December 9, 2011 in New York City. (Photo by Slaven Vlasic/Getty Images)
#11: Jason Mraz "I Won't Give Up"
CANNES, FRANCE - MAY 17: Musician Jason Mraz performs at the "The Big Fix" premiere party at the Plage du 3.14 during the 64th Cannes Film Festival on May 17, 2011 in Cannes, France. (Photo by Francois Durand/Getty Images)
#10: Coldplay "Paradise"
LONDON, ENGLAND - FEBRUARY 21: (UK TABLOID NEWSPAPERS OUT) performs at The Brit Awards 2012 at The O2 Arena on February 21, 2012 in London, England. (Photo by Dave Hogan/Getty Images)
#9: Bush "The Sound Of Winter"
NEW YORK, NY - JULY 28: Musician Gavin Rossdale of the rock group Bush performs at The Bowery Ballroom on July 28, 2011 in New York City. (Photo by Jason Kempin/Getty Images)
#8: Foster The People "Don't Stop"
(L-R) Mark Pontius, Mark Foster and Cubbie Fink of band Foster The People pose on the red carpet arriving at the BRIT Awards 2012 in London on February 21, 2012. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)
#7: The Fray "Heartbeat"
NEW YORK, NY - JANUARY 19: (EXCLUSIVE COVERAGE) Ben Wysocki, Joe King, Isaac Slade, and Dave Welsh of The Fray visit SiriusXM Studio on January 19, 2012 in New York City. (Photo by Cindy Ord/Getty Images)
#6: Train "Drive By"
LAS VEGAS, NV - OCTOBER 29: Train singer Pat Monahan performs at the Andre Agassi Foundation for Education's 16th Grand Slam for Children benefit concert at the Wynn Las Vegas October 29, 2011 in Las Vegas, Nevada. The event raises funds to help improve education for underserved youth in the Las Vegas community. (Photo by Ethan Miller/Getty Images)
#5: Kelly Clarkson "Stronger"
Kelly Clarkson performs at the Staples Center during the 54th Grammy Awards in Los Angeles, California, February 12, 2012. AFP PHOTO Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
#4: Bruno Mars "It Will Rain"
Bruno Mars performs at the Staples Center during the 54th Grammy Awards in Los Angeles, California, February 12, 2012. AFP PHOTO Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
#3: Katy Perry "The One That Got Away"
LAS VEGAS, NV - JANUARY 27: Singer Katy Perry arrives at 1 OAK Las Vegas at the Mirage Hotel & Casino to celebrate the grand opening weekend and GiveLove charity event on January 27, 2012 in Las Vegas, Nevada. (Photo by Jeff Bottari/Getty Images)
#2: Daughtry "Crawling Back To You"
WEST HOLLYWOOD, CA - NOVEMBER 20: Musicians Josh Paul, Chris Daughtry, Josh Steely and Brian Craddock of Daughtry attend the Fiat Presents Jennifer Lopez's Official American Music Awards After Party at Greystone Manor Supperclub on November 20, 2011 in West Hollywood, California. (Photo by Chris Weeks/Getty Images for Fiat)
#1: Adele "Set Fire To The Rain" Photo Source: Getty Images/ Kevin Winter