It’s been described as an “experiment,” a “rebound” and “a little bit of a joke,” but alas, Mariah Carey and Randy Jackson are going back to being just friends.

The veteran American Idol judge is no longer co-managing Carey, The Hollywood Reporter has confirmed. In November 2011, THR first reported that Jackson and Irving Azoff were representing the singer.

“Randy was more of an in-between guy,” says a source close to the situation. “She was looking for new management and he was like a temporary fix.”

According to an insider, Carey recently signed with Red Light Management, which counts Dave Matthews, Tim McGraw and Alabama Shakes as clients on the firm’s diverse roster, and is being handled by COO Bruce Eskowitz. Despite various reports, it appears former RCA Records executive Bruce Flohr is not involved in Carey’s career.

Jackson and Carey go back to their respective Columbia Records days, when Jackson was vice president of A&R during the 1990s and Carey was signed to the label from 1988 to 2001. Over the years, Jackson has produced, co-written and appeared on many Carey recordings. He’s also played bass for the superstar both in the studio and on the road.

Elsewhere on the Mariah Carey front, the diva will premiere her new video on American Idol tonight. The song, called “Beautiful” and featuring Grammy winner Miguel, is from her as-yet-untitled forthcoming album, which might end up featuring the show’s final three ladies on a track.

Angie Miller, Candice Glover and Kree Harrison sang background vocals for Carey in the recording studio last week, most of which was captured on video, naturally, though it’s not yet known whether the song they worked on will make the final track listing. [Billboard.biz]