best songs ever made?

I am only 30, but was brought up on the classics. Also this is really hard b/c I listen to new, old, and anything between. Rock, jazz, death metal, just about anything except rap and very little country (I like the outlaw stuff!)

1. Led Zep - When the Levee Breaks
2. Pink Floyd - Dark Side of the Moon (actually, whole damn album!)
3. Black Sabbath - War Pigs