Adams' compositions include "Nixon in China" and "The Death of Klinghoffer."
Another of his works, "Doctor Atomic," will be performed at the Metropolitan Opera in October. Dessay, who appeared in two Met productions last season, is hailed by Opera News for her "electrifying style of coloratura."
The publication cites Horne for her "dazzling" mezzo-soprano voice.
Milnes is cited for his artistic integrity and Fleming is hailed for her "vocal intelligence, musical grace and golden voice."
The awards will be presented November 16th in a ceremony at the Plaza Hotel.
Also note that Night at the Opera is moving nights, to Thursdays - join Ron Moore Thursday nights at 8pm starting this week on KPAC and KTXI.