LESSON IX

(for all voices)

EXERCISE N. 18

Perform a small messa di voce, with crescendo and diminuendo, and transform the vowels remaining in the same point of the mask.

EXERCISE N. 19

Sing without focusing on the interval and maintain the sound in the same point of the mask. Articulate the sextuples and imagine them as if they were ascendant. (Vaccai, lessons VII and VIII).