5. "Pyramid Song"
Radiohead took a well-deserved break in 1999 after the nonstop madness of the OK Computer tour, popping up only at the Tibetan Freedom Concert in Amsterdam on June 13th. The brief set opened with a brand new piano-based tune called "Egyptian Song," although when they began playing it again the following year, the group had fleshed it out a bit and changed the title to "Pyramid Song." Fans expected to hear it on Kid A, but it didn't actually make an album until Amnesiac in 2001. It's remains a staple of their live shows.