I did something that sounded i little like it once. Set one oscillator to a spectral wave (not to close to the "edges", no. 32 is a good starting point) and control wave select with a LFO locked to the clock. Use a non standard wave for the LFO and play around with the contour and the LFO amount for interresting results. When you have some pattern you like running, try to change the starting wave (spetral wave no.) and hear it all change into something new...
I just looked at the patch and i saw that i am also modulating the contour of of the first LFO with another LFO. Even more chaos
