Squeak squeak squeak

So I got this annoying squeaking at higher rpm’s. Obviously replaced the belt same thing. Sprayed the belt with water sprayed the belt with a dry lubricant goes away for a minute then comes back. Seems like it only squeals in the morning when it’s cold or wet. So I bought an upper idler pulley switching .Sprayed the belt with water sprayed the belt with a dry lubricant goes away for a minute then comes back. Seems like it only squeals in the morning when it’s cold or wet. So I bought an upper idler pulley switching that out first. But I finally got under there with a normal stethoscope, with a long drillbit taped to the end and it almost seem like the noise is coming from my AC compressor pulley. Any advice?

 

I'm having the same issue. It came out of nowhere. Found a crack on the back of the belt going length wise replaced the belt and it was gone. The chirp is starting to return. I've checked all the pulleys when I replaced the belt. Didn't see anything of note.