Harp Sound With No Way to Turn It Off

I want to provide a clue to the question asked in Harp Sound With No Way to Turn It Off - Apple Community. The discussion was locked so I couldn't add a new comment there. I too have the same problem of this harp sound that occurs randomly with no way to turn it off other than rebooting the watch. Today I heard this sound when the watch was in nightstand mode on my charger and one of my alarms came up. I picked up the watch and was able to turn off the alarm and the harp sound stopped. So I think the harp sound is related to nightstand mode. To the OP: Maybe turning off nightstand mode if you don't use it will alleviate your problem.