a.pe.ri.od.ic is a Chicago-based performance collective featuring post-Cagean notated, acoustic, experimental music. Founded in 2010*, a.pe.ri.od.ic's repertoire explores the indeterminacy of various musical elements including instrumentation, structure, pitch, and/or duration. Drawn to works of sparseness, contemplation, and quietude, this "daring group" (Chicago Reader) focuses on scores primarily notated with prose. Led by Nomi Epstein, the ensemble has commissioned, premiered, and recorded works by composers such as Michael Pisaro, Eva-Maria Houben, Jurg Frey, James Saunders, and Pauline Oliveros. a.pe.ri.od.ic released its debut album, more or less, featuring the music of Jurg Frey in 2014 under New Focus Recordings.

*Founded by Nomi Epstein and Lee Weisert in 2010.

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