M

http://www.youtube.com/movie?v=jewTfVC7XD4&ob=av1e&feature=mv_sr

This is the movie 'M' and was recommended to me by a friend. It is rather long but the use of sound in it is really fascinating as it is made in 1931 and is around the when sound was being first introduced to and in comparing it to how we are so used to watching movies now and use to sound being such an integral part. Also you can tell quite easily when it is working and when it isn't.

Below is a link to a trailer for the film and you can quite clearly hear the difference.

http://www.imdb.com/video/screenplay/vi4008117785/