Heman led all his sons in singing in the Lord’s temple. His sons used cymbals, lyres, and harps. That was their way of serving in God’s temple. King David chose these men.
From Jeduthun’s family: Gedaliah, Zeri, Jeshaiah, Shimei, Hashabiah, and Mattithiah. There were six of them. Jeduthun led his sons. Jeduthun used harps to prophesy and give thanks and praise to the Lord.