instrumentalist

noun

person who plays a musical instrument

Wiktionary

noun

Etymology: Etymology tree English instrumental Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Hellenic *-tās Ancient Greek -τής (-tḗs) Ancient Greek -ῐστής (-ĭstḗs)bor. Latin -istader. Old French -istebor. Middle English -ist English -ist English instrumentalist From instrumental + -ist.

One who plays a musical instrument, as distinguished from a vocalist.
An adherent of instrumentalism.