Founded in Sleepy Hollow, N.Y., in 1998, the Slambovian Circus of Dreams will perform “A Very Slambovian Christmas” at Infinity Hall on Friday, Dec. 13, at 8 p.m. The band’s music combines folk rock, Americana and hillbilly crossed with Pink Floyd. Be prepared for holiday songs with a twist. For information about tickets, visit infinityhall.com/events.