On Tuesday, Feb. 28, the quartet Sō Percussion—YSM alums Eric Cha-Beach ’07MM, Josh Quillen ’06MM, Adam Sliwinski ’03MM ’04MMA ’09DMA, and Jason Treuting ’01MM ’02AD—will perform a program of music by Vijay Iyer ’92BS, Nathalie Joachim, Treuting, Caroline Shaw ’07MM, and Bryce Dessner ’98BA ’99MM. We spoke with Sliwinski about Sō Percussion’s ethos and mission, its connections to Yale, and the repertoire the quartet is working to imagine and build.