What is your best rock song or modern (post 1950) musical piece to bring serenity? Also allowed are classical pieces redone as rock - such as Apollo 100's rendition of Bach's "Jesus, Joy of Man's Desiring".

A song that helps you relax, or a song that inspires or soothes you...

I liked this song when I was programming, trying to write a new program. It was low-level programming, so every time I created a new function, and the memory allocation spilled over into unassigned territory the system would crash, and I would have to reboot. I played this song over and over. I think it crashed my computer 1000 times over the next nine months, but finally I had my baby... thanks to Procul Harem. Now there are several versions of this song (Annie Lennox, et al)...