Usher told "Extra's" Renee Bargh, "That's my secret weapon, incredible, as a writer, as a musician, as an actress, all those elements really help to prepare artists." Jill added that Usher didn't need to convince her to join him on the show. "When Usher calls, you take the call."

She's ready to help Usher win "The Voice" Season 6. Her best advice for contestants is, "Listen to your gut, follow your heart and it will lead you somewhere special."