Upward flowing water through a riser from a reservoir excites a freely suspended
striker displacing it from its gravitational resting position to make chaotic contact
with encircling resonating elements attached to a mounting plate in order to produce
tones of random sequence and degree. The upward water flow is generated by a pump
submerged in the water reservoir that is replenished by the gravity flow of water
returning through an aperture in the mounting plate. The striker is freely suspended
from a frame assembly including a means to raise or lower the striker in relation
to the upward water flow, so that raising or lowering the striker decreases or
increases respectively the production of tones or random sequence and degree. The
preferred striker is spherical and the preferred resonating elements are chimes
included in a housing forming a resonating chamber.