Nehemiah 11:23

For [there was] a command of the king concerning them and a regulation concerning the singers, required {day by day}.

Ezra 6:8-9

And I issue forth a decree for what you should do for these elders of the Jews to build this house of God. The full expense will be paid to these men from the riches of the king from the taxes of [the province] Beyond the River, without delay.

1 Chronicles 9:33

Now these [were] the singers; the heads of the {families} of the Levites [were] in the chambers free from other service, for day and night [they were] over them on the service.

Ezra 7:20-24

And the remainder of the needs for the house of your God that falls to you to provide, you may provide from the house of the king's treasury."

Nehemiah 12:47

So all of Israel in the days of Zerubbabel and in the days of Nehemiah gave the daily food portions of the singers and gatekeepers. And they set apart [that which was for] the Levites, and the Levites set apart [that which was for] the descendants of Aaron.

Treasury of Scripture Knowledge

Summary

For it was the king's commandment concerning them, that a certain portion should be for the singers, due for every day.

Bible References

The king's

1 Chronicles 9:33
Now these [were] the singers; the heads of the {families} of the Levites [were] in the chambers free from other service, for day and night [they were] over them on the service.
Ezra 6:8
And I issue forth a decree for what you should do for these elders of the Jews to build this house of God. The full expense will be paid to these men from the riches of the king from the taxes of [the province] Beyond the River, without delay.
Ezra 7:20
And the remainder of the needs for the house of your God that falls to you to provide, you may provide from the house of the king's treasury."