What does 1 Chronicles 25:1 mean?

David and the army commanders chose men from the families of Asaph, Heman, and Jeduthun to lead the music in the temple. They played lyres, harps, and cymbals. The list of those who served in this way is as follows: 1 Chronicles 25:1 - Modern Text Bible

(Now the focus shifts to the musicians, who were also organized by family and chosen for their role in worship.)