1 Chronicles 25:7

So the number of them, with their brethren... was two hundred fourscore and eight. — This total of two hundred and eighty-eight skilled musicians (24 × 12) shows that each of the twenty-four leading minstrels, called in 1 Chronicles 25:2 the “sons” of Asaph, Jeduthun, and Heman, was associated with a company of eleven “brethren,” who were experts in the chanting of the sanctuary. The twenty-four leaders accompanied the singing of their choirs with instrumental music.