Albert Barnes Commentary Ezekiel 40:44

"And without the inner gate were chambers for the singers in the inner court, which was at the side of the north gate; and their prospect was toward the south; one at the side of the east gate having the prospect toward the north." — Ezekiel 40:44 (ASV)

Without - Outside of the gate in the inner court. See N, Plan II.

Singers - These were Levites of particular families, those of Heman, Asaph, and Merari, whose genealogy is carefully traced up to Levi (see marginal reference). These chambers (N, Plan II) may have been for the singers and priests who were at that time engaged in the services of the temple. Other chambers (Ezekiel 42:1 and following) were for the use of the priests at other times; and the Levites and singers, when not on duty, would find accommodation in the thirty chambers of the outer court.

If there is a departure here from the symmetry elsewhere observed, it may be accounted for by the fact that as the sacrifices were to be made on the north side of the altar, and therefore the tables for the sacrifices were on that side only, so those who had charge of the house and its singers might have rooms near.

Others correct the Hebrew text by the Septuagint, and read the passage thus: And without the “inner gate” two chambers (that is, rows of chambers) “in the inner court, one at the side of the north gate, and their prospect toward the south, one at the side of the south gate, and the prospect toward the north.”