It’s hard to separate Eye of the Tiger from Rocky. When you think of one, you think of the other. But Survivor wasn’t Sylvester Stallone’s first choice for the soundtrack.

He wanted Queen’s Another One Bites the Dust for Rocky III, but couldn’t secure the rights. And if you’ve ever wondered why Eye of the Tiger seems to fit so perfectly in that training montage from Rocky III, it’s because Survivor’s Jim Peterik and Frankie Sullivan wrote the song in part by timing the guitar and drums to coincide with Rocky’s punches, according to Rolling Stone. Check it out: