1 Esdras 1:15

15 And the temple singers, the sons of Asaph, were in their place according to the arrangement made by David, and also Asaph, Zechariah, and Eddinus, who represented the king.

1 Esdras 1:15 In-Context

13 and carried them to all the people. Afterward they prepared the passover for themselves and for their brethren the priests, the sons of Aaron,

14 because the priests were offering the fat until night; so the Levites prepared it for themselves and for their brethren the priests, the sons of Aaron.

15 And the temple singers, the sons of Asaph, were in their place according to the arrangement made by David, and also Asaph, Zechariah, and Eddinus, who represented the king.

16 The gatekeepers were at each gate; no one needed to depart from his duties, for their brethren the Levites prepared the passover for them.

17 So the things that had to do with the sacrifices to the Lord were accomplished that day: the passover was kept