Life John Legend, Kelly Clarkson say goodbye to Adam Levine as he exits ‘The Voice’ May 24, 2019May 30, 2019Erin Jensen, USA TODAYComments Off on John Legend, Kelly Clarkson say goodbye to Adam Levine as he exits ‘The Voice’ Though John Legend says he's sorry to see Adam Levine leave, he says, "Gwen (Stefani)" is going to be great. I think Blake's pretty happy about it."