The sons of Lotan were Hori and Heman.
Timna was Lotan’s sister.

He was wiser than anyone—wiser than Ethan the Ezrahite, and Heman, Calcol, and Darda, sons of Mahol. His reputation extended to all the surrounding nations.

Zerah’s sons: Zimri, Ethan, Heman, Calcol, and Dara—five in all.

These are the men who served with their sons.

From the Kohathites: Heman the singer,
son of Joel, son of Samuel,

Heman’s relative was Asaph, who stood at his right hand:
Asaph son of Berechiah, son of Shimea,

So the Levites appointed Heman son of Joel; from his relatives, Asaph son of Berechiah; and from their relatives the Merarites, Ethan son of Kushaiah.

The singers Heman, Asaph, and Ethan were to sound the bronze cymbals;

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.

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

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:

From Heman: Heman’s sons:
Bukkiah, Mattaniah, Uzziel, Shebuel, Jerimoth, Hananiah, Hanani, Eliathah, Giddalti, Romamti-ezer, Joshbekashah, Mallothi, Hothir, and Mahazioth.

All these sons of Heman, the king’s seer, were given by the promises of God to exalt him, for God had given Heman fourteen sons and three daughters.

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.

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.

The singers, the descendants of Asaph, were at their stations according to the command of David, Asaph, Heman, and Jeduthun the king’s seer. Also, the gatekeepers were at each gate. None of them left their tasks because their Levite brothers had made preparations for them.