Probably by volume, but it used to be super common for any random group of people to all know the same melodies, or how to play it on piano. A lot of union songs for instance are old American traditional songs with all the lyrics changed. The expectation was that all the union members knew the tunes already.
Probably by volume, but it used to be super common for any random group of people to all know the same melodies, or how to play it on piano. A lot of union songs for instance are old American traditional songs with all the lyrics changed. The expectation was that all the union members knew the tunes already.
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