I am not sure that the Threadlocker product is conductive for electrical / sound purposes. I'd be careful in using it because one could be causing a major issue in using it.
While performing a search, I found this information from the Lock-Tite site:
A. Loctite® does not sell any electrically conductive threadlockers. There are a handful of silver-filled electrically conductive epoxies, but these were formulated to replace solder connections on a printed circuit board. These products are so highly filled/dense that they probably wouldn't fit between threads.
I'm not implying that such a product doesn't exist. It just might take a bit of looking to get the correct product for the application.