updates:
1. I made the Halloween project due this Thursday.
2. For those of you using the Halloween music in your project, here’s what I learned: the little Arduino can only handle the music. As soon as I added any blinking light at all it freaked out (technical term) which is why it made a high pitched sound.
What’s the solution? Take the Halloween music code and put it on a separate Arduino. Let it run by itself with no other code at all. Place the rest of your code (blinking lights and/or a servo) on a separate Arduino.