03/25/2013 AT 10:55 PM ET
The Voice is back! And there are new celebrity coaches.
Shakira, who welcomed a son, Milan, in January, and Usher officially took over for Cee Lo Green and Christina Aguilera Monday night, joining Blake Shelton and Adam Levine on the show’s two-hour season 4 premiere.
The quartet kicked off the show with a group performance of the Beatles’ “Come Together,” with Levine on drums and Shakira playing a harmonica while Shelton and Usher traded licks on guitars.
But it was the emotional backstories of several contestants that stole the show.
Kris Thomas, a pastor’s son who signed a record deal and lost it after college, recounted a story of nearly driving his car into a house while intoxicated. His gender-bending falsetto on Whitney Houston’s “Saving All My Love for You” shocked the judges who didn’t realize a man was on stage until they turned their chairs to face the R&B singer.
“In my four seasons, I’ve never heard anything like that,” Levine said with surprise.