help with music?

Hello,

I'm excited by new electonincs (thank you Roger), but music isn't really about equipment.
I'd love to expand my music collection. I feel confident in my music selections for classical, vocalists and country/bluegrass. Unfortunately I don't appreciate hip-hop
I'd love to get some ideas for jazz and rock.
In jazz I like Brubeck and Miles Davis but have been lost by some of the more complex forms of jazz.
My rock is almost all old collections (like Led Z. #1 and Aqualung). A helpful granchild brought over some heavy metal but I couldn't appreciate it. Another one brought over "Dark Side of the Moon" and I loved it.
So with that in mind, could anyone tell me what I might buy in the rock/jazz music? The wonderful new stereo equipment begs me for some new music.

Thanks