next to the voice I use different kind of singing bowls
originating from Tibet, nepal, thailand and japan.
The Gongs vary from 20cm diameter till 1 meter
and originate from china and burma.
The Kalimba, african thumb piano, is tuned in pentatonic scale,
another one in aeolian modus.
The lithophones are in aeolian and lydian modus, pentatonic
and two big slabs in a difference of just 2 hertz,
which creates a pulsating effect.