It's hard to imagine without it, but Def Leppard's "Pour Some Sugar on Me" almost wasn't a part of their monstrous '80s album Hysteria. Here's how the band's biggest hit made it onto the album last ...

Hair metal's biggest hit song — Def Leppard's "Pour Some Sugar On Me" — shouldn't even exist. Fortunately, a series of unlikely events ultimately led to one of the biggest mainstream breakthroughs of ...