Blake Shelton Gwen Stefani

Blake Shelton, Gwen Stefani's Duet at Billboard Music Awards 2016: Grade It

Arguably The Voice‘s biggest winners to date, Blake Shelton and Gwen Stefani took the Billboard Music Awards stage on Sunday for a headline-making performance of their romantic duet “Go Ahead and Break My Heart.”

Their outfits may not have been in sync — Shelton wore a conservative plaid jacket, while Stefani rocked a translucent, skin-colored dress — but their voices were in perfect harmony. And that’s what really matters… right?

Watch a portion of the performance below:

“Go Ahead and Break My Heart” is the newest single off Shelton’s album If I’m Honest; he and Gwen first performed it live together on a recent episode of The Voice.

Your thoughts on the coaches’ big collaboration? Grade their performance below, then drop a comment with your full review.