FIRST THOUGHT WEREWOLVES because I am very Halloween-biased! But besides that hmhm.... I'd personally think a summer-y theme with a Twist would be interesting... either a folklore/ghost set ala that one switch and valk ! era event or smth shoujo rei-esque. I forgot the words to describe it but like. Those types of summery songs I think would be pretty cool if you apply it to DF!! Also steampunk.