On this day in 1937 soprano Zinka Milanov made her Metropolitan Opera debut as Leonora in Il trovatore. 

The New York Sun:

Miss Milanov disclosed with the first phrases of “Tace la notte placida,” a generous endowment of voice. As the opera progressed she also made clear the possession of dramatic abilities which enabled her to go beyond the long-familiar routine of the role. She was a personable figure, if no mere wisp of a woman. In her curtain bows, solo and ensemble with her associates of the cast, she exhibited a smile of charm. These considerations disposed of, there remain certain questions as to her use of an organ of power, flexibility and adequate compass.

At its best, Miss Milanov’s singing was of a persuasive order, smoothly controlled, with a praiseworthy legato, a well-supported pianissimo, high notes of challenging fullness and intensity, and an expressive gamut of vocal color. But that best gave way frequently to tones that were either spread or harshly penetrating. The soprano is inclined to sing sharp above the staff, whether in full voice or with diminished power. Bravura measures were acceptable if not impeccably fashioned. The total impression was of a vocal equipment with possibilities beyond the uses to which it was put.