In what style of art did Edward Purrington and Paul Hindemith collaborate?
Edward Purrington: Edward Purrington (December 6, 1929 – April 14, 2012) was an American opera director and artistic administrator. Edward Purrington:  He had the fortune of getting to work directly with many fine opera composers during his years with the SFO, such as Igor Stravinsky, Paul Hindemith, Gian Carlo Menotti, and Krzysztof Penderecki.
i don't know