Guess you all had a much better Tower in New York than the one we had here in Fairfax. I'd try looking for Celtic music and would find no one knowledgable - world music was a pretty small section ...
When I asked questions on Classical (Hilliard Ensemble, for instance) I was mostly on my own.
When I was looking for Great American songbook stuff (anything much beyond Frank or Tony Benett, ...nada ...)
I gather they knew more youth market stuff than Jazz or much of anything else. If there was no personal service, then no reason to pay a premium, heh?
At least online I can google it myself and find quite a bit - and lots of good leads on music from the folks here (Jennifer Warnes, Boz - Dig, etc) tho I haven't aquired the taste for Patricia barber yet, I did try ...