Solfeggio

French �Solf�ge, � vocal exercises sung to the solmization syllables (do, re, mi, etc.) and, by extension, vocalizes, or exercises sung to a single vowel, often florid and difficult to master. Solfeggio collections survive from the 17th century onward, with examples by leading composers of 18th-century opera, such as Nicola Porpora (also a singer and famed singing teacher) and Alessandro Scarlatti