דברי הימים א, פרק ט״ז, פסוק ז׳

A momentous occasion took place when the formal structures of song and praise to God were established in the Tabernacle. A specific song of thanksgiving was introduced, and its primary placement holds special significance. One perspective suggests a chronological milestone, marking the very first day David handed this song over to Asaph to be performed [מצודת דוד, ביאור שטיינזלץ]. Alternatively, the focus is on the daily order of prayer. While the Levites regularly praised God using a wide variety of psalms, David instituted a rule that these specific songs must be recited first, taking priority over all other music [מלבי״ם].

The exact nature of David's involvement in creating this music presents an intriguing question. It is uncertain whether David composed the exact words of the song himself, or if he merely provided the general framework and themes, leaving the actual writing of the lyrics to one of the Levite musicians [ביאור שטיינזלץ]. Regardless of who penned the text, the musical performance itself was highly organized. The thanksgiving was led by Asaph and his brothers using a call and response format. Asaph would begin by calling out in gratitude to God, and the rest of the Levites would then answer, singing together following his lead [רש״י].