Hi Carl, this is my first time on this site, and I've agreed with many things you've posted, but some post 20th century music is easy, and although I don't know you, and have only read a few of your posts here, I think you might like some classical stuff. Yes, I'm biased, I'm a music student and a classical pianist, and like you, (I think), I don't listen to a lot of what people would classify as 'popular' music (pop, rock, etc.), but if you listen to some contemporary classical music, I think you'll find that they regard silence as highly as you do. It's the moments in between the notes that make music beautiful.
(that having been said, a lot of it isn't as sociable as bluegrass...)