His influence as a teacher has perhaps been underestimated, since he trained dozens of musicians to sing in the new style, including the castrato Giovanni Gualberto Magli, who sang in the first production of Monteverdi's first opera Orfeo.
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Giulio Romolo Caccini (also Giulio Romano) (8 October 1551 – 10 December 1618), was an Italian composer, teacher, singer, instrumentalist and writer of the very late Renaissance and early Baroque eras.
Giulio Romano | Giulio Tremonti | Giulio Andreotti | Giulio Einaudi | Giulio Angioni | Giulio Natta | Giulio Douhet | Giulio Caccini | Giulio Belli | Giulio Ricordi | Giulio Paolini | Giulio Clovio | Giulio Benso | Giulio Bartolocci | Giulio Roma | Giulio Questi | Giulio Petroni | Giulio Parigi | Giulio de' Medici (d. 1600) | Giulio de' Medici | Giulio Alberoni | ''The Battle of the Milvian Bridge (Giulio Romano) | SS ''Giulio Cesare'' | Giulio Viozzi | Giulio Terzi di Sant'Agata | Giulio Superti-Furga | Giulio Racah | Giulio Mancini | Giulio Gavotti | Giulio de'Medici |