Divrey Hayamim Alef 25:7

7 So the number of them, with their brethren that were trained in the shir Hashem (music, songs of Hashem), even all that were skilled, was two hundred fourscore and eight.

Divrey Hayamim Alef 25:7 Meaning and Commentary

1 Chronicles 25:7

So the number of them, with their brethren
Who each of them had twelve with them, as after reckoned: that were instructed in the songs of the Lord;
taught how to sing them: [even] all that were cunning;
expert and well skilled in the science of singing: was two hundred and eighty eight;
for there being twenty four classes answerable to those of the priests, and twelve in each class, twelve times twenty four makes two hundred and eighty eight.

Divrey Hayamim Alef 25:7 In-Context

5 All these were the banim Heman the chozer (seer) of HaMelech in the devarim of Elohim, to lift up the keren. And HaElohim gave to Heman fourteen banim and three banot.

6 All these were under the hands of their av for shir in the Beis Hashem, with cymbals, nevalim, and kinnorot, for avodas Beis HaElohim, under the support of HaMelech to Asaph, Yedutun, and Heman.

7 So the number of them, with their brethren that were trained in the shir Hashem (music, songs of Hashem), even all that were skilled, was two hundred fourscore and eight.

8 And they cast goralot, shift against shift, katon as well as gadol, the meiven as well as the talmid (student).

9 Now the first goral which was for Asaph fell to Yosef; the second to Gedalyahu, who with his brethren and banim were 12;