The style of music has changed a lot since that early trailer. We weren't sure what we were going for originally but with the more realistic art direction we could take with the UE4 engine, it seemed natural to go more classical with the music. That's not to say there isn't room for some more variation in the future - Liam is an endlessly inventive musician and it's always a pleasure to hear what he's been working on.
Did the jumpscare get you?