"Frusciante extensively used his Clavia Nord Lead 2, a Casio SK-1, and the Akai MPC3000 on the album To Record Only Water for Ten Days. Other electronic instruments used during Frusciante's recent recording spree include a Chamberlain, a Moog Voyager, an Arp String Ensemble, a Korg MS10, and a late-1970s Synare analog drum synthesizer."more
During a November 1997 interview with Sound On Sound magazine, Autechre talk about the internals of their Casio SK-1. "See this chip here? If you connect any two of these points together, it crosses the samples together. You can get ring modulation, flangers, delays, and all this other timed-based stuff. So we're going to try and get a switch fitted on the back that can move across the points, that way we can adjust it in real-time in a live situation." via [Sound On Sound](http://www.soundonsound.com/sos/1997_articles/nov97/autechre.html)more
The Casio SK-1 is presented front and center on Soccer Mommy's "Collection" album artwork. [Pitchfork Review](https://pitchfork.com/reviews/albums/soccer-mommy-collection/) "An occasional stab of synthesizer is the closest these songs come to pomp, and the production is still scruffy around the edges, hi-fi only by the standards of her early self-recordings."more
This was a steal at a local thrift store. I originally intended to circuit bend it, however as I played around with it I found it has great capabilities in it's original form. The sampling function is probably my go-to use for this instrument, but the built-in effects, "sound design" option, and present voices are worth exploring as well.