Sounds of Silence
What about missed opportunities? What band did you always want to see in concert... but never did? Maybe they never made it your way, or perhaps you were a starving student and just couldn't spare another arm and a leg.

For me, it's Elton John and REM. I never seem to know about Elton John concerts. I've missed two or three now. With REM, I decided to buy groceries instead of a ticket... but I did nick one of my sister's cassettes. Michael Stipe's voice still sends me.