Kathryn why a sound file?

A sound file could clearly be a useful learning aid for auditory and musical learners. In learning a language it can be an excellent way of experiencing the culture to listen to and/or sing songs and music as each culture has its own particular musical language. One can prepare students by studying the language of the poetry or lyrics of a song before hearing it or (preferably) between hearings so that the music can be allowed to speak first. As Hattie says the influence of the teacher is very powerful( about 30% of the entire procedure of learning) and the teacher's excitement about a particular piece can influence the students greatly in introducing them to new music. (I had the experience of Year 10 boys being happy to listen to a Romantic song by Schumann.)
The sound file of the Chopin Nocturne I would use in preparation for watching part of the film 'The Pianist' set in Poland about a Polish Jew who was a pianist (and unable to play the piano throughout the war) and managed to survive the Nazi occupation of Warsaw during WW2. The story, whilst containing disturbing images of the Holocaust also has the central theme of a 'good' Nazi who helps the pianist by bringing him food. Thus the discussion of the Nazi time need not be only negative from the German people's point of view. This would certainly be a good tool for interpersonal and linguistic learners as there would be a great deal of discussion. If students need to be active in order to learn (Vygotsky) this would certainly be beneficial as the Chopin Nocturne is very beautiful piece which would almost certainly involve the students emotionally and engage them.