His death was confirmed by his daughter Elin Wilder-Melcher.
Mr. Wilder, who played cornet and fluegelhorn as well as trumpet, lent his elegant tone to bands led by Lionel Hampton, Count Basie, Jimmie Lunceford and Benny Goodman. In 1962 he toured the Soviet Union with Goodman. He also worked, in concert and in the studio, with Billie Holiday, Harry Belafonte and many other singers.
A soft-spoken and stately man who never appeared in public without a tie, he developed a clear and even sound that reflected the years he spent studying classical performance as a young man. He aspired to a symphonic career but gravitated to jazz out of necessity.
“The opportunities for black musicians in the concert field were nil,” he said in an interview for the jazz archive of Hamilton College in 1996. His interest in classical music, he added, “inhibited my jazz playing a great deal” early in his career: “I was very stiff.”
Through the 1940s, Broadway was also off-limits to black musicians; few if any performed in the pit orchestras of musicals. It’s not clear who was the first, but Mr. Wilder was certainly one of the first — and even after he had crossed the color line he faced obstacles.
Fresh from stints with Lucky Millinder and Dizzy Gillespie, he was studying classical performance at the Manhattan School of Music and hoping to join the New York Philharmonic when he got a call to play in the band for the 1950 musical revue “Alive and Kicking.”