They have a wide genre list, links to artists, and much of their music can be downloaded for free.
Like you, my musical tastes tend to be more traditional, and I like bluegrass, ethnic, classical, blues, jazz, country western, (more western than country) and even some alternative /new age sort of stuff.
You won't always find the "big" name artists, but there's still enough unknown artists with great talent, that I don't mind.
Most of the big names only put out one or two really classic musical pieces every 5 years anyway. Who needs it?