Re: [tied] Greek "mysia", German Mysien/Moesien, Cyrillic " Mizija"

Just found a very relevant connection to this. I know, it's wrong to
raise the dead, but this might be something.

"Musor" was an old Russian word for musician (which is where the name
[Mussorgsky] comes from.)

Is this a Greek borowing, or is it right from PIE?