Lyric discussion by MrDelirious 

Cover art for The Sons of Cain lyrics by Ted Leo and the Pharmacists

How has no one commented on this? Such a great song. I love Ted Leo. My favorite line here is "I've got to sing just to exist". So do I.

I'm not sure about an overall meaning, but it sounds like some one left him alone with the "sons of Cain", or people inferior to the one who left. Or something.