Blake Shelton is still getting used to working with new "The Voice" coaches Shakira and Usher, who will be taking over for Christina Aguilera and Cee Lo Green for the show's upcoming fourth season.

Shelton said: "The chemistry is definitely different with Shakira and Usher replacing Christina and Cee Lo. But the show is still really good. It's still entertaining - it's just different personalities."

"I tell ya, Shakira is not joking around about this. She is serious and she wants to win this thing. I don't know if I've seen anybody as committed - out of the six of us that have done this now - as she is to winning this thing. And that makes me laugh because I know I'm gonna beat her."

"And Usher, he just kind of plays the cool card and he's real laid back. He doesn't have to sell himself too much - I mean, the guy found Justin Bieber. That's kind of the coaching/mentor role, right there."