Complex sentence: This Whitney himself received as the pupil of Luigi Vannuccini of Florence, who, in addition to being a master voice teacher, conducted the Italian premiere of Gounod's Faust, and worked closely with the opera composers Rossini, Vincenzo Bellini, Donizetti, and Verdi.
Split into simpler sentences: This Whitney himself received as the pupil of the master voice teacher Luigi Vannuccini of Florence. Vannuccini conducted the Italian premiere of Gounod's Faust, and worked with Rossini, Vincenzo Bellini, Donizetti, and Verdi.