ST. LOUIS (KSDK) - There's a new single you'll want to add to your iTunes library when it becomes available this Sunday.

It's a collaboration between Grammy-winning rapper Murphy Lee of the St. Lunatics and hit-making producer Jason "Jay-E" Epperson.

The song is called "Up and Down Love," featuring Josh Golden from Murphy Lee's new album, "Murphy Lee Vs. Jay E."

Murphy Lee and Jay-E joined First @ 4 on Friday to talk about the song.

Click the video player above to watch the interview.