French folk songs published in this new edition were discovered by Frank Martin during two mountain
excursions – in a similar way to Béla Bartók when he collected his folk melodies.
Frank Martin heard Chanson des Métamorphoses being sung by
a child in a Savoy valley (French: Savoie) to the south of Geneva. It took a large
amount of chocolate to persuade the boy to sing the whole of the long text clearly
so that he could write down the many verses. The second folk song Il faut
partir pour l’Angleterre was also heard by him, sung by a
small boy with a strong voice in a valley in Wallis, in south-west Switzerland.