Charles Ellicott Commentary Nehemiah 12:36

"and his brethren, Shemaiah, and Azarel, Milalai, Gilalai, Maai, Nethanel, and Judah, Hanani, with the musical instruments of David the man of God; and Ezra the scribe was before them." — Nehemiah 12:36 (ASV)

With the musical instruments of David the man of God. —No part of the service deviated from sacred precedents .

Ezra the scribe before them. —Between the singers and the princes came he who was the greatest in dignity, though the second in office.