"Heart's On Fire" by John Cafferty

The Rocky soundtracks provided a great opportunity for 80s rock bands to showcase their muscle. Before John Cafferty secured a spot on the Rocky IV soundtrack, he and his "Beaver Brown Band" had a top 10 hit with "On The Dark Side" in 1984, which was on the soundtrack for Eddie And The Cruisers. The Eddie soundtrack cruised to #9, which outmuscled the Rocky IV soundtrack, which got to #10. 

In 1985, they released the album "Tough All Over", whose title track climbed to #22. Three additional singles would chart from this excellent bar band record, and in the midst of their success came "Heart's On Fire" from the Rocky IV movie. This energetic rocker might have been a victim of the band's saturation on radio at the time, stalling at #76.

Stallone was clearly a fan of the boys - another cut from "Tough All Over", "Voice Of America's Songs" was featured in his movie Cobra. On the strength of all these singles, the "Tough All Over" album reached #40 in 1985. Unfortunately, the band's 1988 follow up, "Roadhouse", did not chart.