Complex sentence: The film, directed by Avi Nesher, accompanied composer and arranger Yair Rosenblum, who was music director of the Nahal troupe and sang songs composed by the band and also appear in the film.
Split into simpler sentences: The film, directed by Avi Nesher, accompanied composer and arranger Yair Rosenblum, who was music director of the Nahal troupe. Rosenblum sang songs composed by the band and also appears in the film.