1 Chronicles 9:33

And these are the singers, chief of the fathers of the Levites, who remaining in the chambers were free: for they were employed in that work day and night.

These are the singers, heads of fathers' [houses] of the Levites, [who lived] in the chambers [and were] free [from other service]; for they were employed in their work day and night.

And these are the singers, heads of fathers' `houses' of the Levites, `who dwelt' in the chambers `and were' free `from other service'; for they were employed in their work day and night.

And these who sing, heads of fathers of the Levites, in the chambers, `are' free, for by day and by night `they are' over them in the work.

Those who were musicians, the heads of Levite families, stayed in the temple chambers and were exempt from other duties because they were on duty day and night.