1 Chronicles 25:6

6 All these [Levites] sang at the LORD's temple under the direction of their fathers Asaph, Jeduthun, and Heman. They played cymbals, lyres, and harps for worship in God's temple under the direction of the king.

1 Chronicles 25:6 Meaning and Commentary

1 Chronicles 25:6

All these were under the hands of their father, for song in the
house of the Lord
Instructed and directed by him in the performance of the service in the temple: with cymbals, psalteries, and harps, for the service of the house of
God;
which were the three principal instruments of music used in the temple service: according to the king's order, to Asaph, Jeduthun, and Heman;
who ordered and directed them what to sing, what tunes to make use of, and what instruments to play upon to those tunes.

1 Chronicles 25:6 In-Context

4 From the sons of Heman were Bukkiah, Mattaniah, Uzziel, Shebuel, Jerimoth, Hananiah, Hanani, Eliathah, Giddalti, Romamti Ezer, Joshbekashah, Mallothi, Hothir, and Mahazioth.

5 (All of them were the sons of the king's seer Heman. They were given to him to make him prominent, as God had promised. So God gave Heman 14 sons and 3 daughters.)

6 All these [Levites] sang at the LORD's temple under the direction of their fathers Asaph, Jeduthun, and Heman. They played cymbals, lyres, and harps for worship in God's temple under the direction of the king.

7 They, along with their relatives, were trained, skilled musicians for the LORD. There were 288 of them.

8 They drew lots for their assignment of duties, the youngest as well as the oldest, the skilled [musicians] along with the students.