symphonize

[ sim-fuh-nahyz ]
/ ˈsɪm fəˌnaɪz /

verb (used without object), sym·pho·nized, sym·pho·niz·ing.

to play or sound together harmoniously.
Also especially British, sym·pho·nise.

Origin of symphonize

First recorded in 1485–95; symphon(y) + -ize

OTHER WORDS FROM symphonize

sym·pho·ni·za·tion, noun