#20: The Fray "Run For Your Life"
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)
#19: Foster The People "Pumped Up Kicks"
NEW YORK, NY - DECEMBER 09: (L-R) Mark Pontius, Mark Foster and Cubbie Fink of Foster The People pose for photos backstage at the Bowery Electric on December 9, 2011 in New York City. (Photo by Astrid Stawiarz/Getty Images for SiriusXM)
#18: 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)
#17: Jessie J "Domino"
<> on November 25, 2011 in Sao Paulo, Brazil.
#16: Daniel Powter "Cupid"
SAITAMA, JAPAN - MAY 26: Daniel Powter arrives at the MTV Video Music Awards Japan 2007 at the Saitama Super Arena on May 26, 2007 in Saitama, Japan. (Photo by Junko Kimura/Getty Images)(Photo by Junko Kimura/Getty Images)
#15: 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)(Photo by Ethan Miller/Getty Images for Luxor)
#14: 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)
#13: The Script "If You Ever Come Back"
NEW YORK, NY - DECEMBER 09: (L-R) Glen Power, Danny O'Donoghue and Mark Sheehan of The Script attend Z100's Jingle Ball 2011, presented by Aeropostale Madison Square Garden on December 9, 2011 in New York City. (Photo by Michael Loccisano/Getty Images)
#12: 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)
#11: Christina Perri "A Thousand Years"
#10: 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)
#9: Matt Nathanson "Run"
#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: Fun. "We Are Young"
#6: Adele "Set Fire To The Rain"
<> at 02 Arena on February 21, 2012 in London, England.
#5: Adele "Rumour Has It"
#4: 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)(Photo credit should read ROBYN BECK/AFP/Getty Images)
#3: Gym Class Heroes "Stereo Hearts"
NEW YORK, NY - DECEMBER 09: (L-R) Disashi Lumumba-Kasongo, Matt McGinley, Travie McCoy and Eric Roberts of Gym Class Heroes 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)
#2: 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)
Katy Perry (credit: Jeff Bottari/ Getty Images)