It's music's biggest night — and it's anyone's night. Jay Z leads the Grammy Awards field with nine nominations, while Justin Timberlake, Macklemore & Ryan Lewis, Pharrell Williams and Kendrick Lamar are on his heals with seven. Who will clean up? Will Lorde become the third youngest Grammy winner ever?
Adam Levine, Blake Shelton, Christina Aguilera and Pharrell show off their unorthodox methods in this behind-the-scenes look at The Voice