דברי הימים א, פרק ט״ו, פסוק כ״א

A dedicated group of Levites was appointed to provide musical accompaniment, utilizing a unique instrument. The primary approach among commentators is that these musicians played harps equipped with exactly eight strings [מצודת דוד, רלב״ג]. Some scholars identify this particular harp with the biblical instrument known as the ugav, because its physical shape closely resembles various plucked string instruments [רלב״ג]. This unique eight-stringed harp also shares a direct connection with the Book of Psalms. It is understood to be the exact instrument used to play the specific psalms that open with a musical direction explicitly mentioning an eight-stringed instrument [רש״י].

The responsibility of these musicians was primarily the physical act of playing the music itself [ביאור שטיינזלץ]. However, another perspective views their performance through the lens of competition and triumph. According to this view, the musicians engaged in a spirited musical rivalry. They would actively compete, each attempting to raise their voice higher to dominate the overall melody, striving to musically overcome their peers [מצודת דוד].