Thanks for the feedback!
The Airhorn is what my brain get's up to when I'm being 'creative' at 2 in the morning (there's very little impulse control left at that point).
My daughter does not like the 'horror' sound (which was an addition right at the end). I agree with her on that, it does not quite fit the theme (that'll teach me to not test it with here first). I was looking for a sad cat meow but had to settle for that instead (there are some really unsettling bone-chilling horror sounds out there).