Drummer/Percussionist for Silent Math Rock Band to Play at Porchfest

Looking for a drummer or percussionist to play with a (mostly) silent math rock band at Porchfest (9/21 afternoon). Drummer who we expected to play with us became busy at the last minute. Music is mostly silent, with some coordinated ensemble hits, and extremely sparse riffs. We will have 2-3 rehearsals before Porchfest, and potentially continue beyond...? experimental music, metal, punk, silent, math rock, performance art, ambient music, noise