In working out playlists for running, I've been going back through some old CDs. Led Zeppelin's fourth album keeps cropping up, and this song, "Going to California," has been on near-constant repeat.
Some people think it was written about Joni Mitchell who both Robert Plant and Jimmy Paige were infatuated with. I don't know about that, but Paige's sweet guitar and Plant's singing get every time. The mandolin's good, too.