Rural New York state, particularly the Hudson River Valley, has a habit of harboring some top- notch folk talent. There’s an undeniable magic up that way and I have some good memories of snowshoeing around when I was a rootless 20-something Brooklynite trying to get out of the frozen hell of NYC for a spell. Anyhoo, one such talented folkster is landing at Humbrews tonight at 8 p.m. for a visit. Dar Williams has headlined and shared many acoustically minded stages in her multi-decade career, building a reputation as modern folk royalty with complex lyrics wedded to sweet, catchy songs ($35).