נחמיה, פרק ז׳, פסוק מ״ד

The organization of the community involved dividing the people according to their specific duties. The singers, who were the descendants of Asaph, held a highly unique role of their own. Because of the specialized nature of their work, they were not simply grouped together with the general population. Instead, they were arranged into an independent division, functioning as a completely separate unit dedicated entirely to their distinct responsibilities [ביאור שטיינזלץ].