#25 Katy Perry "Part Of Me"
LOS ANGELES, CA - FEBRUARY 12: Singers Rihanna and Katy Perry in the audience at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Larry Busacca/Getty Images For The Recording Academy)
#24 Outasight "Tonight is the Night"
OTTAWA, ON - JANUARY 29: Singer Outasight performs before the 2012 Tim Hortons NHL All-Star Game at Scotiabank Place on January 29, 2012 in Ottawa, Ontario, Canada. (Photo by Gregory Shamus/Getty Images)
#23 O.A.R. "Gotta Be Wrong Sometimes"
HOLLYWOOD, CA - NOVEMBER 16: (L-R) Benj Gershman, Marc Roberge and Richard On of O.A.R perform onstage during the 5th Annual Rock The Kasbah Gala in Support of Virgin Unite and The Eve Branson Foundation at Boulevard3 on November 16, 2011 in Hollywood, California. (Photo by Frazer Harrison/Getty Images For Rock The Kasbah)
#22 Jason Mraz "I Won't Give Up"
PARK CITY, UT - JANUARY 20: Singer Jason Mraz performs at the Speaker Series for "In Search of Incredible" at Bing Bar presented by Intel and Asus during 2012 Park City on January 20, 2012 in Park City, Utah. (Photo by Michael Buckner/Getty Images for Bing)
#21 Matt Nathanson w/ Sugarland "Run"
LOS ANGELES, CA - MAY 12: Singer Matt Nathanson performs at the 53rd Annual NARM Convention Awards Dinner on May 12, 2011 in Los Angeles, California. (Photo by Valerie Macon/Getty Images)
#20 Gotye "Somebody That I Used To Know"
MAITLAND, AUSTRALIA - MAY 07: Wally De Backer of Gotye performs on stage at the Groovin The Moo Festival on May 7, 2011 in Maitland, Australia. (Photo by Mark Metcalfe/Getty Images)
#19 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)
#18 Ellie Goulding "Lights"
OSLO, NORWAY - DECEMBER 11: Ellie Goulding performs at the Nobel Peace Prize Concert at Oslo Spektrum on December 11, 2011 in Oslo, Norway. (Photo by Ragnar Singsaas/Getty Images)
#17 Christina Perri "A Thousand Years"
CHICAGO, IL - NOVEMBER 08: Christina Perri attends "The Twilight Saga: Breaking Dawn: Part 1" Concert Tour at the House Of Blues Chicago on November 8, 2011 in Chicago, Illinois. (Photo by Timothy Hiatt/Getty Images)
#15 Bruno Mars "It Will Rain"
LONDON, ENGLAND - FEBRUARY 21: (UK TABLOID NEWSPAPERS OUT) Bruno Mars performs at The Brit Awards 2012 at The O2 Arena on February 21, 2012 in London, England. (Photo by Dave Hogan/Getty Images)
#16 Christina Perri "A Thousand Years"
US singer-songwriter Christina Perri poses 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)
#14 Selena Gomez and the Scene "Love You Like A Love Song"
US singer and actress Selena Gomez performs in Montevideo on February 11, 2012. AFP PHOTO/Pablo PORCIUNCULA (Photo credit should read PABLO PORCIUNCULA/AFP/Getty Images)
#13 Cobra Starship w/ Sabi "You Make Me Feel"
PARK CITY, UT - JANUARY 22: (L-R) Ryland Blackinton, Gabe Saporta, and Victoria Asher of Cobra Starship perform at Cobra Starship presented by Bing at The Bing Bar on January 22, 2012 in Park City, Utah. (Photo by Michael Buckner/Getty Images for Bing)
#12 David Guetta w/ Usher "You Make Me Feel"
LOS ANGELES, CA - FEBRUARY 12: DJ David Guetta performs 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)
#11 OneRepublic "Good Life"
INDIANAPOLIS, IN - FEBRUARY 03: (L-R) Drew Brown, Brent Kutzie, Ryan Tedder and Zach Filkins of OneRepublic perform during the Pepsi Pre-Super Bowl Party at Indiana State Museum on February 3, 2012 in Indianapolis, Indiana. (Photo by Mike Coppola/Getty Images for Pepsi)(Photo by Mike Coppola/Getty Images for Pepsi)
#10 Maroon 5 w/ Christina Aguilera "Moves Like Jagger"
LOS ANGELES, CA - JULY 08: Musician Adam Levine of the band Maroon 5 and singer Christina Aguilera perform at the Maroon 5 Video Shoot for "Moves Like Jagger" with Christina Aguilera on July 8, 2011 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for A&M/Octone)
#09 Coldplay "Paradise"
LONDON, ENGLAND - FEBRUARY 21: (UK TABLOID NEWSPAPERS OUT) Chris Martin of Coldplay performs at The Brit Awards 2012 at The O2 Arena on February 21, 2012 in London, England. (Photo by Dave Hogan/Getty Images)
#08 Colbie Caillat "Brighter Than The Sun"
NAPA, CA - APRIL 10: Colbie Caillat performs at the Uptown Theatre as part of Aloft Hotels Presents Live in the Vineyard on April 10, 2011 in Napa, California. (Photo by Tim Mosenfelder/Getty Images For Live In The Vineyard LLC)
#07 Katy Perry "The One That Got Away"
Singer Katy Perry 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 /AFP/Getty Images)Robyn BECK /AFP/Getty Images
#06 Gavin DeGraw "Not Over You"
COLUMBIA, MD - AUGUST 24: Gavin DeGraws performs during his first concert since being assaulted in New York City on August 8th, at Merriweather Post Pavillion on August 24, 2011 in Columbia, Maryland. This is DeGraw's first concert after being injured during an incident near the National Underground, a bar and live venue that he owns with his brother in New York City, in the early hours of August 8, 2011. (Photo by Kris Connor/Getty Images)
#05 Adele "Someone Like You"
LONDON, ENGLAND - FEBRUARY 21: Adele onstage at The Brit Awards 2012 at The O2 Arena on February 21, 2012 in London, England. (Photo by Dave J Hogan/Getty Images)
#04 Jessie J "Domino"
MADRID, SPAIN - DECEMBER 09: Singer Jessie J performs on stage during "40 Principales Awards" 2011 at Palacio de los Deportes on December 9, 2011 in Madrid, Spain. (Photo by Carlos Alvarez/Getty Images)
#03 Kellie Clarkson "Stronger (What Doesn't Kill You)"
NEW YORK, NY - DECEMBER 09: Singer Kelly Clarkson performs onstage during Jingle Ball 2011, presented by Aeropostale at Madison Square Garden on December 9, 2011 in New York City. (Photo by Stephen Lovekin/Getty Images)
#02 Rihanna w/ Calvin Harris "We Found Love"
Barbadian singer Rhianna performs during the BRIT Awards 2012 in London on February 21, 2012. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
#01 Adele "Set Fire To The Rain"
Singer Adele cries as she accepts her Grammy for Album of the Year 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)