Are the Kumyks the direct living descendants of Khazars? They still speak the same Turkic language as the Khazars did.
https://en.wikipedia.org/wiki/Kumyks#Language

Kumyk song "Va hey kaba hurma" by group "Kipchaks" from Kumykia:
https://www.youtube.com/watch?v=brGqtCt2XtU