Usher, 34, and Shakira, 36, replaced Christina Aguilera and Cee Lo Green for the fourth season, reported Access Hollywood. Usher hinted that there is a possibility of returning.

"That means that you have to stay tuned," he said when asked about joining the new season. Shakira stayed humble about the show's success with them onboard and said, "It's all beginners luck."u00a0

Shakira