Bruce Zemsky, senior partner in the New York agency Zemsky Green, died on August 6.
The cause was myelodysplastic syndrome.
The agency has a terrific list of singers, whom Bruce served to the best of his ability.
They included Jonas Kaufmann, Pretty Yende, Anja Harteros, Ermonela Jaho, Nino Machaidze, Eva Maria Westbroek, Gwyneth Jones, Charles Castronovo, Brandon Jovanovich and Erwin Schrott (pictured with him).
He tended to sign his artists for recordings with Sony Classical.
An opera fanatic he lived for the art, having no close family.
He had a private funeral on Thursday at Riverside Chapel in New York.
UPDATE: Kaufmann pays tribute.