1 Chronicles 9:34

34 they were exempt from all other duties. These were the heads of Levite families as designated in their family tree. They lived in Jerusalem.

1 Chronicles 9:34 Meaning and Commentary

1 Chronicles 9:34

These chief fathers of the Levites were chief throughout their
generations
Even all before made mention of in this chapter:

these dwelt at Jerusalem;
always resided there, and did not in turns go into the country villages, as the inferior Levites did; their office requiring them to be constantly there, being chief of the porters, singers who had the superintendency and direction of the rest.

1 Chronicles 9:34 In-Context

32 Some of the brothers, sons of the Kohathites, were assigned to preparing the bread set out on the table each Sabbath.
33 And then there were the musicians, all heads of Levite families. They had permanent living quarters in The Temple; because they were on twenty-four-hour duty,
34 they were exempt from all other duties. These were the heads of Levite families as designated in their family tree. They lived in Jerusalem.
35 Jeiel the father of Gibeon lived at Gibeon; his wife was Maacah.
36 His firstborn son was Abdon, followed by Zur, Kish, Baal, Ner, Nadab,
Published by permission. Originally published by NavPress in English as THE MESSAGE: The Bible in Contemporary Language copyright 2002 by Eugene Peterson. All rights reserved.