#20 David Guetta - Titanium

INDIO, CA - APRIL 14: DJ David Guetta performs onstage at the 2012 Coachella Valley Music & Arts Festival held at The Empire Polo Field on April 14, 2012 in Indio, California. (Photo by Mark Davis/Getty Images for Coachella)

#19 Justin Bieber - Boyfriend

Photo by Al Bello/Getty Images

LAS VEGAS, NV - MAY 05: Singer Justin Bieber stands in the ring after Floyd Mayweather Jr. defeats Miguel Cotto by unanimous decision in their WBA super welterweight title fight at the MGM Grand Garden Arena on May 5, 2012 in Las Vegas, Nevada. (Photo by Al Bello/Getty Images)

#18 Havana Brown - We Run The Night feat. Pitbull

SINGAPORE - SEPTEMBER 26: Havana Brown performs on stage on the third and final day of the three day F1 Rocks Singapore concert at Fort Canning Park on September 26, 2009 in Singapore. (Photo by Alphonso Chan/Getty Images)

#17 Calvin Harris - Feel So Close

CHELMSFORD, ENGLAND - AUGUST 22: Calvin Harris performs during Day two of V Festival 2010 on August 22, 2010 in Chelmsford, England. (Photo by Gareth Cattermole/Getty Images)

#16 Drake - The Motto feat. Lil Wayne

OTTAWA, ON - JANUARY 29: Rap artist Drake performs during the 2012 Tim Hortons NHL All-Star Game between Team Alfredsson and Team Chara at Scotiabank Place on January 29, 2012 in Ottawa, Ontario, Canada. (Photo by Bruce Bennett/Getty Images)

#15 Maroon 5 - Payphone feat. Wiz Khalifa

CHICAGO, IL - MARCH 01: Adam Levine and James Valentine of Maroon 5 perform duing Escape To Total Rewards at Union Station on March 1, 2012 in Chicago, Illinois. (Photo by Daniel Boczarski/Getty Images for Caesars Entertainment)

#14 Jennifer Lopez - Dance Again feat. Pitbull

HOLLYWOOD, CA - APRIL 30: Artist Jennifer Lopez and Atlantico Rum celebrate the upcoming Enrique Iglesias, Jennifer Lopez and Wisin & Yandel Tour at Boulevard3 on April 30, 2012 in Hollywood, California. (Photo by Jason Merritt/Getty Images for Atlantico Rum)

#13 Karmin - Brokenhearted

LOS ANGELES, CA - NOVEMBER 20: Singer Amy Heidemann and musician Nick Noonan of Karmin, winner of New Media Award, pose in the press room at the 2011 American Music Awards held at Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

#12 Carly Rae Jepsen - Call Me Maybe

LOS ANGELES, CA - APRIL 13: Singer Carly Rae Jessop sings God Bless America during the game between the San Diego Padres and the Los Angeles Dodgers at Dodger Stadium on April 13, 2012 in Los Angeles, California. (Photo by Harry How/Getty Images)

#11 Usher - Scream

NEW YORK, NY - FEBRUARY 24: Usher performs at Madison Square Garden on February 24, 2012 in New York City. (Photo by Taylor Hill/Getty Images)

#10 Kelly Clarkson - Stronger

Kelly Clarkson (C) performs the American National Anthem prior to the start of Super Bowl XLVI between the New England Patriots and New York Giants on February 5, 2012 at Lucas Oil Stadium in Indianapolis, Indiana. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

#9 One Direction - What Makes You Beautiful

WELLINGTON, NEW ZEALAND - APRIL 22: Louis Tomlinson, Niall Horan, Harry Styles, Liam Payne and Zayn Malik of One Direction perform live on stage at St James Theatre on April 22, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images)

#8 Katy Perry - Part Of Me

HOLLYWOOD, CA - APRIL 18: Siinger Katy Perry arrives at the ASCAP POP Music Awards at the Hollywood Renaissance Hotel on April 18, 2012 in Hollywood, California. (Photo by John M. Heller/Getty Images)

#7 Chris Brown - Turn Up The Music

Photo by Ronald Martinez/Getty Images

ORLANDO, FL - FEBRUARY 26: Recording artist Chris Brown sits courtside during the 2012 NBA All-Star Game at the Amway Center on February 26, 2012 in Orlando, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Ronald Martinez/Getty Images)

#6 Nicki Minaj - Starships

NEW YORK, NY - APRIL 06: Nicki Minaj performs as Times Square was brought to a standstill on April 6, 2012 as Nicki Minaj teamed up with Nokia to perform live for the launch of the Windows Phone-based Nokia Lumia 900 in North America, in New York City.
Tens of thousands of people watched Nicki perform a medley of her hits before a prominent Times Square building was turned into a living, breathing entity in time to the unique Nokia Lumia 900 remix of her hit single ?Starships?. The building appeared to fill with water before a 60ft waterfall was seen to cascade down the side of the building. The reaction of the crowd was shown on nine massive electronic screens around the famous square making it one of the biggest LED displays ever seen and will be used in the video of Nicki?s new Nokia Lumia 900 remix of ?Starships?.
The singer said: ?When Nokia came to me with the idea to make a building come alive and to perform in Times Square in front of my fans to celebrate the launch of the Nokia Lumia 900 there was only ever one answer. To see the idea on paper was amazing but to see it for real blew me away. It brought Times Square to a standstill. The absolute bonus for me is that my fans, who have been so loyal to me, are now part of the video for the Starships Nokia remix. Performing in my home town of NYC the same week as the release of my new album, Pink Friday: Roman Reloaded is amazing and it really is a dream come true.?
The Nokia Lumia 900 will be available in unique and eye-catching cyan blue and a matte black with a new high-gloss white version on sale later this month. To watch more of the amazing event go to www.facebook.com/nokiaus (Photo by Jason Kempin/Getty Images for Nokia)

#5 Drake - Take Care feat. Rihanna

ORLANDO, FL - FEBRUARY 26: Recording artist Drake looks on during the 2012 NBA All-Star Game at the Amway Center on February 26, 2012 in Orlando, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Ronald Martinez/Getty Images)

#4 Gotye - Somebody That I Used To Know

INDIO, CA - APRIL 15: Musician Wouter "Wally" De Backer aka Gotye performs during Day 3 of the 2012 Coachella Valley Music & Arts Festival held at the Empire Polo Club on April 15, 2012 in Indio, California. (Photo by Michael Buckner/Getty Images for Coachella)

#3 Flo Rida - Wild Ones feat. Sia

NEW YORK, NY - MAY 02: Flo Rida attends YouTube 2012 Upfronts Presentation at Beacon Theatre on May 2, 2012 in New York City. (Photo by Jason Kempin/Getty Images for You Tube)

#2 fun. - We Are Young feat. Janelle Monae

INDIO, CA - APRIL 17: Singer Nate Ruess of fun. performs during Day 3 of the Coachella Valley Music & Arts Festival 2011 held at the Empire Polo Club on April 17, 2011 in Indio, California. (Photo by Karl Walter/Getty Images)

#1 The Wanted - Glad You Came

LONDON, ENGLAND - NOVEMBER 21: Jay McGuinness, Nathan Sykes, Max George, Tom Parker and Siva Kaneswaran of The Wanted perform during the T4 Stars Of 2010 at Earls Court on November 21, 2010 in London, England. (Photo by Ian Gavan/Getty Images)