If your repertoire is The Barber, Lucia, Somnambula and all such Italian dainties, well and good. Nothing need disturb the complete enjoyment of this lace-work. But if your auditors weep at Butterfly and Zaza or thrill to Pagliacci, they demand you use a quite different technic, which comes to the point of my story. I believe it was Jean de Reszke who advocated the voice “in the mask” united to breath support from the diaphragm. From personal observation I should say our coloratura charmers lay small emphasis on that highly important factor and use their head voices with a freedom more or less God given. But the power and life-giving quality of this fundamental cannot be too highly estimated for us who must color our phrases to suit modern dramatics and evolve a carrying quality that will not only eliminate the difficulty of vocal demands, but at the same time insure immunity from harmful after-effects.

Cooke, James Francis. Great Singers on the Art of Singing. Presser, 1921.