How would she have known that though? None of the info cards say anything about music for any of the suspects. Unless one of you guys had a conversation about music with her, but even then, it's not like she would have known the rest of us would know.

Wow, know doesn't even sound like a real word to me anymore. Anyway, if she did draw the symbol - which I still don't think so but whatever - it has to be something that would point out the killer that we'd all kn--understand.