This is beautiful - a perfect example of that place where the boundaries between sound and music are crossed - great rhythmic content, atmospheric, and fascinating. Never used the Karplus thing but it sounds very much like the resonating effects I love to use. 10/10 from me!
> This is great! How did you process the audio to create the effect?
Well, that's a long story. The main thing is filtering with a choir of physical models of strings (Karplus-Strong models) driven by a granular cload of material derived from human voice (speaking Catelan). It is not simple and it is no plug-in