Cast 5
John Legend
Self - Mentor (9 episodes)
Kelly Clarkson
Self - Mentor (9 episodes)
Robin Thicke
Self - Mentor (9 episodes)
Jennifer Nettles
Self - Mentor (9 episodes)
Self - Mentor (9 episodes)
Self - Mentor (9 episodes)
Self - Mentor (9 episodes)
Self - Mentor (9 episodes)