Roger Louis Voisin, who at 17 became the youngest musician ever to join the Boston Symphony Orchestra, has died after a long illness, his family said. He was 89.

Voisin was a member of BSO's trumpet section from 1935 to 1973 and was principal trumpet from 1950 to 1965. He died Wednesday.

He was born in Angers, France, before moving to Boston at age 11. Voisin received much of his early training from his father, Rene, also a member of the BSO.

Voisin caught the ear of longtime Boston Pops Orchestra conductor Arthur Fiedler when he served as a signaler to recall orchestra and audience members after intermission.

He later joined the Boston Pops. Then, on Fiedler's recommendation, he auditioned for the BSO at age 17 and joined his father in the trumpet section.

Voisin served in the Navy as a trumpeter, instructor and conductor during World War II before returning to the BSO. He later served as chairman of the trumpet department of the New England Conservatory, taught at Boston University and organized and directed the Boston Symphony Brass Ensemble.