Beverly Bower, a soprano who sang in the first public performance at the new Metropolitan Opera House at Lincoln Center, died March 24 of cancer in Washington Township, N.J. She was 76.Bower began her career singing on radio and television, and joined the New York City Opera in 1956. During her years with the opera, her roles included Micaela in “Carmen,” Amelia in “Amelia Goes to the Ball” and Donna Anna in “Don Giovanni.” On April 11, 1966, Bower performed as Minnie in Puccini’s “Fanciulla del West” at an acoustical test run at the new Met. The program, the first public performance there. She also sang at the Vienna State Opera under Herbert von Karajan in 1963. After she retired, she joined the board of the New Jersey Pro Arte Chorale and was a voice teacher. She is survived by husband John and a son.