The udu is a plosive aerophone (in this case implosive) and an idiophone of the Igbo of Nigeria. In the Igbo language, ùdù means 'vessel'. Actually being a water jug with an additional hole, it was played by Igbo women for ceremonial uses. Usually, the udu is made of clay. The instrument is played by hand. The player produces a bass sound by quickly hitting the big hole. There are many ways that the pitches can be changed, depending on how the hand above the small upper hole is positioned. Furthermore, the whole corpus can be played by fingers. Today it is widely used by percussionists in different music styles.
I've been an hour here thinking how to describe the accord and harmony of your DOYEk instruments wich is called also "UDU drum!!!!!!!! I think I'll keep thinking......................... Sor sepas❤️ Pace from Kurdistan 💙💜 Germany.