Tengger is a traveling family band with roots in Japan and South Korea. The name comes from the Mongolian language, meaning “unlimited expanse of sky.” Which fits the droning and gorgeous sound castles built by this family of three, including the young son Raai. The group will be making a roost at the Miniplex tonight, where Ramble Records labelmate Die Geister Beschwören will join solo sonic sculptor New Saturday Mourning Light Through a Window (aka, Chini, aka Clamato Slim). This is a must-hear for anyone interested in drone, ambient and spiritual universe music. At 8 p.m. ($15, $10 advance).