In April 1926 the German-born composer Werner Josten directed the opera's first American performance, at Smith College, Massachusetts where he was professor of music. His production was based on d'Indy's edition. The following year, on 27 October, "L'incoronazione" received its British première, with a performance at Oxford Town Hall by members of the Oxford University Opera Club using a score edited by Jack Westrup. In the 1930s several editions of the opera were prepared by leading contemporary musicians, including Gustav Mahler's son-in-law Ernst Krenek, Hans Redlich, Carl Orff (who left his version incomplete), and Gian Francesco Malipiero. Malipiero's edition was used to stage performances in Paris (1937) and Venice (1949). The Redlich edition was performed at Morley College, London on May 21 1948, under the direction of Michael Tippett.