Bonkers effects patch with visualiser.
Also fun with external input, but in the demo it’s playing back a sample, and there’s a single voice from a wavetable VCO (Morphing Terrarium – swap this out with a free module such as Surge XT if you don’t have the Synthesis Technology collection).
Uses Instant Delay which is premium, but you could also try Surge XT Nimbus or Stocaudio Polydelay for free alternatives).