My browser / operating system: ChromeOS 13597.94.0, Chrome 88.0.4324.186, No Flash version detected
I'm trying to make a sound play when my sprite receives my signal. But the sound just doesn't play, I tried with a different sound and it just played a disturbing sound that sounds like someone's tapping on my headphones, or like my headphones are broken.

when I receive [ happy halloween :) v]
switch backdrop to [ trumpetskele v]
show
play sound [ SKULL TRUMPET v] until done