April 18 (UPI) -- Morgan Wallen and Post Malone have teamed up on new music. The duo released "I Ain't Comin' Back" Friday ahead of Wallen's upcoming album I'm the Problem, due May 16. "You call me the devil, then you told me where to go," Malone sings. "Go throw your pebbles." "'Cause the night I said I'm leavin', I turned into Richard Petty , broke my heart and I got even in my '97 Chevy," the song continues. "Now I'm walking on this water mixed with Johnny Walker Black, there's a lot of