Film Aspects Meaning - 'The Power Of One'

How do the film aspects show the meaning in John. G. Auildsen's film "The Power Of One".

S: In the concert scene, we hear the native South Africans sing a song in their language that was written by P.K  (The main character)

E: The joyful song was lead by a native singer and the chorus was sung by the rest of the tribe harmoniously, whilst Doc played the piano and P.K composed. 

X: The song makes us as the audience feel hopeful and it was moving. This was because P.K - though the singing - brought the tribes together. 

X: The purpose of this was to help show that P.K was the mythical figure of the Rain-maker;

X: The singing combined with long shots that also helps show the harmony of the natives as they are all sitting nicely together.

Y: The singing can be compared to the singing at the boxing match, as the now freed natives sing to P.K to show him they think he is the Rain-maker. Both lots of singing give a sense of hope for the native South Africans.