I'll start: The following two statements are simultaneously true. Emo is so useless a genre label that a compelling argument can be made that bands like King Crimson and Shellac (jangly guitars and sad songs) are emo. There's also a 95% chance that if a stranger says they're, "into emo," you know EXACTLY what they mean.
pinkerton is an emo album and its wild to me that this is a controversial statement
