50 Leçons de chant (Op.9)

This is one of the 50 Leçons de chant (50 Singing Lessons), Op. 9, by Giuseppe Concone, written for the middle range of the voice with a simple piano part, and published in Paris while he was teaching singing there. The lessons have no words; they are sung to vowels or to solfège syllables. A 2018 Japanese study says they were written to teach the singing style of Rossini's time.

The set spread far beyond Paris: English editions were printed in Boston by 1877, and in Japan, where it is simply called "Concone 50," it is used by most beginning voice students.

Concone (1801–1861) was born in Turin, Italy. He taught singing and piano in Paris from 1837 to 1848, then went back to Turin as organist of the royal chapel. He wrote more sets after this one, including 25 Lessons, Op. 10, which he described as a follow-up to the 50 Lessons, and 40 Lessons, Op. 17, for bass or baritone.

IMSLP