December 17. Blues-guitar bliss! This double bill to die for at Infinity Hall brings together the two reigning queens of the form, both of whom have deep links to the Hudson Valley's heady days as a musical center in the 1970s. Four-time W.C. Handy Award winner Rory Block is a mind-blowing demon of the acoustic/slide style and a darling of the folk revival who learned her craft directly from such masters as Son House, Mississippi John Hurt, and the Reverend Gary Davis. Back in the day, she spent much time in Woodstock, which is where lap steel/dobro diva Cindy Cashdollar grew up and performed with Levon Helm and Paul Butterfield. One of the world's most sought-after roots musicians, she's also worked with Bob Dylan, Van Morrison, Rod Stewart, Asleep at the Wheel, Leon Redbone, Ryan Adams, and far too many other names to fit here. (Jorma Kaukonen jams December 7; NRBQ returns December 17.) 7pm. $24-$39. Norfolk, Connecticut. (866) 666-6306; Infinityhall.com.