Shortly after arriving in New York City in March 1967, Glass attended a performance of works by Steve Reich (including the ground-breaking minimalist piece "Piano Phase"), which left a deep impression on him; he simplified his style and turned to a radical "consonant vocabulary". Finding little sympathy from traditional performers and performance spaces, Glass eventually formed an ensemble with fellow ex-student Jon Gibson, and others, and began performing mainly in art galleries and studio lofts of SoHo. The visual artist Richard Serra provided Glass with Gallery contacts, while both collaborated on various sculptures, films and installations; from 1971 to 1974 he became Serra's regular studio assistant.