While I do not care much for MC, tape music or WC synthesis (more of a Moog guy myself), I do appreciate the work they did in breaking the mold when it comes to what's possible in synthesis.
And then there's the work of Delia Derbyshire at the BBC Radiophonic Workshop, and all the crazy work they did on Dr. Who and other series, almost all in tape. Truly ground-breaking stuff that enriched the musical landscape.
There are other tape saturation plugins, a few even free, but this is the best I have found.
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