From Jeduthun: Jeduthun’s sons:
Gedaliah, Zeri, Jeshaiah, Shimei, Hashabiah, and Mattithiah—six—under the authority of their father Jeduthun, prophesying to the accompaniment of lyres, giving thanks and praise to the Lord.

Heman and Jeduthun had with them trumpets and cymbals to play and musical instruments of God. Jeduthun’s sons were at the gate.

He assigned Obed-edom and his 68 relatives. Obed-edom son of Jeduthun and Hosah were to be gatekeepers.

With them were Heman, Jeduthun, and the rest who were chosen and designated by name to give thanks to the Lord—for His faithful love endures forever.

And Mattaniah the son of Micha, the son of Zabdi, the son of Asaph, was the principal to begin the thanksgiving in prayer: and Bakbukiah the second among his brethren, and Abda the son of Shammua, the son of Galal, the son of Jeduthun.

David and the officers of the army also set apart some of the sons of Asaph, Heman, and Jeduthun, who were to prophesy accompanied by lyres, harps, and cymbals. This is the list of the men who performed their service:

All these men were under their own fathers’ authority for the music in the Lord’s temple, with cymbals, harps, and lyres for the service of God’s temple. Asaph, Jeduthun, and Heman were under the king’s authority.

And of the sons of Heman; Jehuel, and Shimei: and of the sons of Jeduthun; Shemaiah, and Uzziel.

And the singers the sons of Asaph were in their place, according to the commandment of David, and Asaph, and Heman, and Jeduthun the king's seer; and the gatekeepers waited at every gate; they did not need to depart from their service; for their brethren the Levites prepared for them.

the Levitical singers dressed in fine linen and carrying cymbals, harps, and lyres were standing east of the altar, and with them were 120 priests blowing trumpets. The Levitical singers were descendants of Asaph, Heman, and Jeduthun and their sons and relatives.

Obadiah the son of Shemaiah, son of Galal, son of Jeduthun; and Berechiah the son of Asa, son of Elkanah, who lived in the villages of Netophathite.

{To the chief Musician, even to Jeduthun, A Psalm of David.} I said, I will take heed to my ways, that I sin not with my tongue: I will keep my mouth with a bridle, while the wicked is before me.

{To the chief Musician, to Jeduthun, A Psalm of Asaph.} I cried unto God with my voice, even unto God with my voice; and he gave ear unto me.

{To the chief Musician, to Jeduthun, A Psalm of David.} Truly my soul waiteth upon God: from him cometh my salvation.

Hurry to help me, Lord, my salvation. For the Chief Musician. For Jeduthun. A Psalm by David.

He will cut off the spirit of princes. He is feared by the kings of the earth. For the Chief Musician. To Jeduthun. A Psalm by Asaph.

So I will sing songs to your name forever; I will fulfill my promises day by day. To the Director: According to Jeduthun's style. A Davidic Psalm.

Asaph, Jeduthun, and Heman were under command of the king. They and their relatives who had been skillfully trained in singing to the LORD, numbered 288.