What flashes through your mind when you hear the strains of this 1970 song from The Doobie Brothers? Is it a load of hairy rockers leaning around on some trees? If it is - you're in luck because that's what the original cover of Long Train Runnin' shows. If, on the other hand, you imagine a naked girl stood on some rail tracks, you're also in luck as that's what the remixed cover shows!