In May 1971, Ellis added a string quartet to the Orchestra. He also hired Bulgarian piano virtuoso Milcho Leviev who was able to improvise fluently in time signatures that would initially be intimidating to most American improvisers. He was an important asset to Ellis's band, and stayed with Ellis for five years. The Orchestra was recorded in late May at Basin Street West in San Francisco. The resulting album, "Tears of Joy", was another live double-LP and was released in late 1971. The album featured a composition called "Strawberry Soup" that has been the subject of several doctoral dissertations due to its metric intricacy, its simple theme and complex variations, and the sheer timbral spectrum that it covers.