in pueritia sua requirentes modos musicos et narrantes carmina in scriptura

Some were composers of music or authors of poetry.

those who composed musical tunes, or put verses in writing;

poets, and composers of music,

Seeking manners of music in their cunning (or in their knowing), and telling songs of scriptures. [In their wisdom seeking the music manners, and telling the ditties of scriptures.]

those who composed musical tunes, and set forth verses in writing;

those who composed musical tunes or put verses in writing;

those who composed musical tunes, or put verses in writing;

others devising musical melodies, and composing poems;

Composers of melodious psalms, writers of lyric poems;

those who composed musical tunes, and set forth verses in writing;

those who composed musical tunes, or put verses in writing;