The original recording of Clair De Lune from 1913 actually played by the composer Claude Debussy might be the most beautiful piece of music ever written.

Water Get No Enemy-Fela Kuti. I think the first 1:20 is the purest musical expression of joy I've ever heard.

Have You Ever Been ( to Electric Ladyland?)-Jimi Hendrix. It's so short but so amazing. I hear something new every time I hear it.

Computer Love-Kraftwerk. This song proved early on that electronic music can have feeling even if the band looks like robots.

Sometimes-My Bloody Valentine. Saw this in a previous comment. Couldn't agree more. It's like being engulfed in a warm blanket of sound.

Not Great Men and At Home He's A Tourist-Gang of Four. This band was life changing for me. These 2 songs epitomize their raw, primitive power.

Jesus Children of America-Stevie Wonder. This song literally saved my life. Not because it's about Jesus, but because it sounds like heaven!