1 Tawarikh 16:4-6

16:4 He appointed some of the Levites to serve before the ark of the Lord, to offer prayers, songs of thanks, and hymns to the Lord God of Israel. 16:5 Asaph was the leader and Zechariah second in command, followed by Jeiel, Shemiramoth, Jehiel, Mattithiah, Eliab, Benaiah, Obed-Edom, and Jeiel. They were to play stringed instruments; Asaph was to sound the cymbals; 16:6 and the priests Benaiah and Jahaziel were to blow trumpets regularly before the ark of God’s covenant.

1 Tawarikh 16:41

16:41 Joining them were Heman, Jeduthun, and the rest of those chosen and designated by name to give thanks to the Lord. (For his loyal love endures!) ¹ 

[16:41]  ¹ tn Perhaps this refers to the refrain of their songs of praise (see Ps 136). In this case one could translate, “to give thanks to the Lord with songs using the refrain, ‘For his loyal love endures.’”