The biggest names in pop, country and hip hop have rung in the New Year at the traditional Rockin' Eve concerts.
ABC's broadcast bounced around parties in L.A., Miami, Nashville and New York City, where many thousands -- host Ryan Seacrest called it a million -- braved the cold to watch performances from the likes of Taylor Swift, One Direction, Snoop Dogg, Magic! and Florida Georgia Line.
The action didn't stop there. Billboard's Hollywood party hosted some of the hottest artists on the planet. Billboard has picked seven of the night's most memorable moments.