Best of 2013: Top 10 Music Collaborations (Video)

THR recounts the year's best musical partnerships, including hits by consistent collaborators, Macklemore and Ryan Lewis, Pharrell and Justin Timberlake. While musicians like Miley Cyrus, Bruno Mars and Katy Perry released hit after hit on their own, 2013 proved that when it comes to music, two can truly better than one, and three's makes than just company. Cross-genre collaborations topped the charts, and beat-heavy duets dominated radio play from season to season, to season to season. PHOTOS:...