Understand that tonality can evoke specific emotions; major often sounds happy, while minor can sound sad. Notice the joyful tonality of the song during the celebration scene.
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Cultural Variation
Different cultures might associate tonalities with varied emotions or events, not always matching Western norms. The tonality used in this folk song conveys a different sentiment in Eastern music.
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Genre Indicator
Certain genres of music have typical tonalities; blues often has a 'blue' tonal scale, distinct from others. This blues riff has a tonality that's deeply rooted in American musical history.