What is your favorite song that speaks to unbelief/atheism?
Mine is Judith by A Perfect Circle.
I'm not the first to answer the question in this manner, but I must admit that "Imagine" by John Lennon came immediately to mind. Another song came to mind though I'm not sure that I completely understand the lyrics. Is "Man in a Box" by Alice in Chains a good candidate ?
Almost anything from Corporate Avenger, but the song "The Bible Is Bullshit" is a great start...
I will follow you into the dark, Death Cab for Cutie
I was going to say that one, but you already beat me to it.