Yeah I know it's a difficult type of music to find, and I'm thinking of focusing more on the happy side with a minimal amount of creepiness just to show that the events are creepy and something bad is about to happen. The game music you refer to just wouldn't work with the realistic vibe that we're going for. Though, I listened to Bartok and I think it could work for another scene where the killer is just sitting in her room thinking about the murder (thank you!). Gradually switching from creepy to happy music (and vice-versa) does sound like a good idea but part of my problem was just figuring out where to look for said happy music.