The kogiri is the principal instrument of the Lobi People of Northern Ghana and Southern Burkina Faso. This West African xylophone is also known as giri, gille, balaphone, and many others. Above is a video of Kakraba Lobi. Below please find a clip of me playing.

The wooden keys are suspended along the top and pitch matched with calabash resonators suspended underneath.

Holes drilled in the calabashes are covered with web material from a spider nest which function as a mirliton or "buzzer". Striking a key produces a pitch that is isolated and amplified by the calabashes and the spider nest mirlitons capture the overtones with a buzzing sound - essentially an acoustic distortion box.