1 Chronicles 25:5-8

5All these were the sons of Heman, the king’s seer, for God had honored him with fourteen sons and three daughters.

6All these men were under the direction of their fathers as they made music at the house of the Lord. Their responsibilities included the playing of cymbals, harps, and lyres at the house of God. Asaph, Jeduthun, and Heman reported directly to the king.

7They and their families were all trained in making music before the Lord, and each of them—288 in all—was an accomplished musician.

8The musicians were appointed to their term of service by means of sacred lots, without regard to whether they were young or old, teacher or student.