Double or Nothing (Kenny Loggins and Gladys Knight)
The Movie This is From: Rocky IV
The Better Known Songs From This Soundtrack: Burning Heart (Survivor), Living in America (James Brown), No Easy Way Out (Robert Tepper), Hearts On Fire (John Cafferty and the Beaver Brown Band)
While the Rocky IV soundtrack didn’t produce any US #1 singles (like Rocky III’s Eye of the Tiger) it did spawn the most singles of any of the Rocky films. Despite being extremely catchy this song wasn’t released as a single but it does feature Mr 1980s Soundtrack Kenny Loggins, paired with Gladys Knight.
Fun fact: Both Loggins and Knight sang songs on other Stallone movies in this decade – Loggins for Over The Top (Meet Me Half Way) and Knight for Cobra (Loving on Borrowed Time).