1 definition by Insert-an-edgy-username-here

A piano note that can make emo kids have a mental breakdown.

Why? It's the first note that plays in the song Welcome To The Black Parade by the band My Chemical Romance, who broke up in 2013.
*in music class*
Person 1: Hey, did you know this about this one piano note?
Person 2: Know what?
Person 1: *plays G note*
Emo kid in class: *proceeds to screech out the lyrics to WTTBP while sobbing*