1 Chronicles 25:2

25:2 From the sons of Asaph: Zaccur, Joseph, Nethaniah, and Asarelah. The sons of Asaph were supervised by Asaph, who prophesied under the king’s supervision.

1 Chronicles 25:6

25:6 All of these were under the supervision of their fathers; they were musicians in the Lord’s temple, playing cymbals and stringed instruments as they served in God’s temple. Asaph, Jeduthun, and Heman were under the supervision of the king.