Invisible Dog Extravaganza

Immerse yourself in the here and now of New York's postclassical music scene at this one-day festival curated by the electric guitar quartet Dither. The foursome is joined by fellow avant-gardists from the classical and free-jazz worlds, including So Percussion, Corey Dargel, Ches Smith and These Arches, R We Who R We (Ted Hearne and Philip White's voice-and-homemade-instrument project), soundsmith singer Lesley Flanigan and accordionist Nathan Koci. Be there or be square, seriously.