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 Duets

Harry Styles, Meghan Trainor
Justin Bieber, Cody Simpson, Home to Mama
Neil Patrick Harris, Jason Segel
Lady Gaga, Christina Aguilera, The Voice
Opening Act Performance: Jason Mraz and Jono
Ron Burgundy, Anchorman, Robin Thicke
Kelly Clarkson Compares "Duets" To "Idol"
John Mayer, Katy Perry, Who You Love
John Mayer, Katy Perry
Katy Perry, John Mayer