1 Chronicles 15:16-17

16David told the leaders of the Levites to appoint some of their relatives as musicians; they were to play various instruments, including stringed instruments and cymbals, and to sing loudly and joyfully.

17So the Levites appointed Heman son of Joel; one of his relatives, Asaph son of Berechiah; one of the descendants of Merari, Ethan son of Kushaiah;