As to the question...I listen to alot of Opera, which no one's seemed to ever hear of.
Besides that I listen mostly to Blues and Motown, folk, rock, whatever. I listen to almost anything except for, like, lymp bizket or whatever my freshman year roomate used to play al the time. Man did they take George Michael's Faith and really butcher it.
I guess people don;t know The Carter Family, or Robert Johnson. The rest of my stuff people know, they may just not personally own it. For something a little newer, I guess Lamb.