Tribeca New Music Festival: Dither + Redhooker

Fearless electric-guitar quartet Dither opens with Lisa R. Coons's pulsating riff collage Entropion and the world premiere of Interference Logic by math-music phenom Tristan Perich. On the second half, Brooklyn instrumental band Redhooker sinks into the minimalist reflections of frontman Stephen Griesgraber.