Shakira and Usher will be substituting for Cee Lo Green and Christina Aguilera in season 4 of The Voice.

Last week’s rumor that Aguilera would be taking a temporary break from The Voice turned out to be true. She will be taking the spring 2013 cycle off along with Cee Lo, but big names will temporarily fill in, with Levine and Shelton sticking around.

“The Voice has always been known for pairing incredible up-and-coming talent with superstar coaches who are top-level current artists,” said executive producer Mark Burnett in a statement. “Having award-winning artists as coaches means they need to be able to tour. Whether in the red chair or on tour, our coaches have their chairs for life. This is exactly why, after three seasons, we needed to allow them to rotate out so they can get on the road amongst their fans. Meanwhile, we’re incredibly excited to have singular artists like Usher and Shakira joining the fold.”

Expressing her pride in being involved with the NBC singing competition from the beginning, Aguilera emphasized her commitment to her fans and her music.

“Since this year NBC and The Voice have decided to tape back-to-back seasons, requiring a full-year commitment, it is important for me to take season 4 off, allowing me to support my music that my fans have been waiting for – with the release of my new album Lotus on Nov. 13. By pursuing my first passion of music during the break, I am also able to come back and offer even more to my team on The Voice in the future.”

While Xtina didn’t go into specifics as to when she would return, Cee Lo will be back next fall.

“I will return for season 5 and will be watching season 4,” he said. “NBC is home and as far as Usher and Shakira are concerned – ‘mi casa [es] su casa.’”

For now, see all four original coaches on The Voice Mondays and Tuesdays on NBC. See our favorite week one auditions in our Top 10 The Voice Blind Auditions – Part 1.

How do you feel about Usher and Shakira joining Adam Levine and Blake Shelton next season?