The Oldest Song in the World ~ Cuniform tablets from the Syrian city of ancient Ugarit, about 3400 bce in the Hurrian language (with borrowed Akkadian terms) had a form of musical notation. There is evidence that both the 7-note diatonic scale as well as harmony existed 3,400 years ago. This flies in the face of most musicologists' views that ancient harmony was virtually non-existent and the scale only about as old as the Ancient Greeks, 2000 years ago.
Alison Balsom Jubilo Bach, Torelli, Corelli, Fasch with Stephen Cleobury & Tom Etheridge, organ The Choir of King’s College, Cambridge Academy of Ancient Music dir. Pavlo Beznosiuk Warner Classics, 2016