After the spate of pieces completed in 1970—the grand and scandalously neglected Symphony in One Movement, the two music theatre pieces, Shadowplay and Sonata about Jerusalem, and the Concerto for 11 with its folkloristic connotations—nothing new was heard from Goehr until the first performance of his Piano Concerto in May 1972. He himself confessed that its elaborately compound homophonic-contrapuntal first movement had cost him almost a year of effort; others began to wonder about the demands of his new Leeds professorship, the more so as the next apparent silence lasted two and a half years.