Named for their pair of one-of-a-kind instruments they made themselves—a baritone ukulele made of salvaged steel (“buke”) and a guitar-bass amalgam (“gase”)—this Brooklyn-based duo crafts catchy indie-pop-rock, which they embellish with percussion and a cache of synthesizing pedals. Hear unique arrangements and melodic tracks from their brand-new album General Dome, the artwork for which features an original coded alphabet that can be cracked only by logging on to the band’s website. Opening act is guitar-and-drums rock duo Ahleuchatistas, who have garnered praise from the New York Times and NPR. Mon 9 p.m.

Visit www.bukeandgase.com.