January 20. Acoustic blues guitarists Stefan Grossman and Steve Katz each started out as students of the great Reverend Gary Davis and were charter figures of the New York folk and folk rock scenes; Grossman played in the Fugs, Katz was in the Blues Project, and both were in the path-making Even Dozen Jug Band. Here, the pair settles into the Rosendale Café for an evening of roots-blues ambrosia to match the eatery’s savory vegetarian cuisine. (Jim Hurst picks January 7; Mourka and the Russian Folk Instrument Ensemble perform January 14.) 8pm. $15. Rosendale. (845) 658-9048; www.rosendalecafe.com.