Complex sentence: Lerner was also producer of the OWI documentary "Hymn of the Nations" (1944), directed by Alexander Hammid, and featuring Arturo Toscanini, and co-director with Joseph Strick of the short documentary "Muscle Beach" (1948).
Split into simpler sentences: Lerner was also producer of the OWI documentary "Hymn of the Nations" (1944), directed by Alexander Hammid, and featuring Arturo Toscanini. He was co-director with Joseph Strick of the short documentary "Muscle Beach" (1948).