ESV: The number of them along with their brothers, who were trained in singing to the Lord, all who were skillful, was 288.
NIV: Along with their relatives—all of them trained and skilled in music for the Lord—they numbered 288.
NASB: Their number who were trained in singing to the Lord, with their relatives, all who were skillful, was 288.
CSB: They numbered 288 together with their relatives who were all trained and skillful in music for the Lord.
NLT: They and their families were all trained in making music before the Lord, and each of them — 288 in all — was an accomplished musician.
KJV: So the number of them, with their brethren that were instructed in the songs of the Lord, even all that were cunning, was two hundred fourscore and eight.
NKJV: So the number of them, with their brethren who were instructed in the songs of the Lord, all who were skillful, was two hundred and eighty-eight.