R. Kelly and Mariah Carey

Mariah Carey and R. Kelly Hit the Studio in Chicago

During her trip to Chicago for “American Idol” auditions, Mariah Carey connected in the studio with Chi-town’s own R. Kelly. The pop diva and the Pied Piper recorded a new duet, which Mariah calls a “total classic.”

“Me and Kells in the lab in Chi town working on a new song! OMG-his voice sounds A++&#trappedintgecloset #totalclassic,” tweeted MC, whose new album is due early next year.

The two previously collaborated on a version of “Betcha Gon’ Know,” which was scheduled to appear on Angels Advocate, the scrapped re-release of Mariah’s 2009 album Memoirs of an Imperfect Angel.