Dating back to 1400 B.C.E., the "Hurrian Hymn to Nikkal" (also known as "A Zaluzi to the Gods" or "Hurrian Cult Hymn", or simply "h.6"), is the oldest complete work of notated written music known to mankind. It was found inscribed on a clay tablet that was excavated from the Royal Palace in the ancient Amorite-Canaanite city of Ugarit (present-day Ras Shamra, Syria). Of about 36 Hurrian songs that were collectively discovered inscribed on the fragments of clay tablets, only "Hurrian Hymn to Nikkal" was a substantially complete hymn.
The contents of the tablet included lyrics for a hymn dedicated to the Semitic orchard goddess Nikkal, wife of the moon god, and instructions for a vocalist accompanied by a lyre, sammûm (a nine-stringed instrument), or a type of harp. Unfortunately, the production credits were not included, so the composer is anonymous.
You can hear the audio of Michael Levy (playing the lyre) performing the oldest known musical melody here: youtube.com/watch?v=QpxN2VXPMLc
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