production dubbing and looping being used only when necessary.  However, due to the large number of special sound effects in this  film, it was one of the rare cases in the 1930s of the use of a  sound designer (another was Murray Spivack (qv) on  _King Kong (1933)_ (qv)), whose job it was just to work out and  design the sound elements of the soundtrack. O.O. Ceccarini (qv)  (a close friend of Albert Einstein (qv)), who occasionally did  special sound work at MGM, was brought in to design the soundtrack,  with the assistance of special sound effects engineer  Franklin Milton (qv) (who would later head up the MGM  post