1Ch 9:33, 25:1-2 | ESV | STEP | Now these , the singers , the heads of fathers ’ houses of the Levites , were in the chambers of the temple free from other service , for they were on duty day and night .

g[See ver. 1 above]

1 Chronicles 9:33

33 Now these, the ^asingers, the heads of fathers’ houses of the Levites, were in the chambers of the temple free from other service, for they were on duty day and night.

1 Chronicles 25:1-2

David Organizes the Musicians

1 David and the chiefs of the service also set apart for the service the sons of ^bAsaph, and of ^cHeman, and of ^dJeduthun, who ^eprophesied with lyres, with ^fharps, and with cymbals. The list of those who did the work and of their duties was: 2 Of the sons of Asaph: Zaccur, Joseph, Nethaniah, and Asharelah, sons of Asaph, under the direction of Asaph, who ^gprophesied under the direction of the king.