In his solo sets, drummer Tatsuya Nakatani treats his percussion pieces—an array of gongs and bowls, snares and cymbals, sticks and bows—as extensions of himself. He bends over these instruments, pushing his body into them as he pulls astonishing tones from them, transmogrifying instrumental elements you thought you knew well into brazen new beasts. In his two Triangle engagements this week, he'll attempt to share that devotion and diligence with extended casts. Thursday, Feb. 14, at Marsh Woodwinds, eight area improvisers, all playing gongs, will follow Nakatani's direction for his aptly named Gong Orchestra. (8 p.m.) And on Friday, Feb. 15, at Nightlight, he will join a quartet that includes saxophonist Crowmeat Bob, cellist Chris Eubank and trombonist Jeb Bishop. —Grayson Currin