The top ten songs of 2013 from Billboard Magazine.
Singer Katy Perry performs onstage at The Ninth Annual UNICEF Snowflake Ball at Cipriani, Wall Street on December 3, 2013 in New York City.
Recording artists Brian Kelley and Tyler Hubbard of Florida Georgia Line celebrate an extraordinary night with a bottle of the new Crown Royal XO at the Big Machine Label Group Crown Royal.
Recording artist Bruno Mars performs onstage during the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada.
P!nk performs at Barclays Center on December 8, 2013 in New York, New York.
Singer Justin Timberlake performs at The Staples Center on November 26, 2013 in Los Angeles, California.
Ryan Lewis (L) and Macklemore pose backstage at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on December 13, 2013 in New York City.
Recording artists Dan Reynolds, Ben McKee, Wayne Sermon and Dan Platzman of music group Imagine Dragons accept the award for Favorite Artist - Alternative Rock.
Robin Thicke performs onstage during 93.3 FLZs Jingle Ball 2013 at the Tampa Bay Times Forum on December 18, 2013 in Tampa, Florida.
Macklemore performs onstage during Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on December 13, 2013 in New York City.