John Gill Commentary Nehemiah 12:8

"Moreover the Levites: Jeshua, Binnui, Kadmiel, Sherebiah, Judah, [and] Mattaniah, who was over the thanksgiving, he and his brethren." — Nehemiah 12:8 (ASV)

Moreover the Levites
Who lived in the same times: were

Jeshua, Binnui, Kadmiel, Sherebiah, Judah, and Mattaniah ;
most of these are made mention of in (Nehemiah 8:7) (Nehemiah 10:9Nehemiah 10:10) (Nehemiah 11:15Nehemiah 11:17) , the last of them is said to be

over the thanksgiving, he and his brethren ;
he was the precentor, or had the directing and conducting of the songs of the temple, particularly the thanksgiving song at the daily sacrifices; Jarchi takes the word here used to be the name of a musical instrument.