For a long time I didn't appreciate Classical music, like you I would listen to any (almost) genre, but two that never made it to my ears of collection were classical and country and western.

That has certainly changed though, and I love classical music now, albeit I don't listen to it a huge amount, when I do I can immerse myself happily in it for hours.

A few that stand out in my mind would be Pachelbel - Canon In D Major, Beethoven's Moonlight Sonata and Symphony No. 5. There is a Shostakovich one as well, can't remember the name, but quite like it too.