I took the idea from the last post a little further and tried a different sample; an already high pitched phrase of Rhodes electric piano. I played the sample in the software sampler, Simpler, higher and higher until it faded from an audible range. I kept going until finally, around eight octaves up, I started hearing strange artifacts from the sample. At this stage I created a MIDI clip with a scale of these sounds, then ran it through compression to bring out some of the more subtle effects, equalization to eliminate any canine-hearing-damaging-frequencies, and some processing to randomize the scale. Here’s what I ended up with.
Impossibly High Rhodes Sample
I’ve been sampling my Casiotone 403 recently. I have recorded and sampled this instrument in the past, but this time I wanted to gather some of the beats at a slow tempo so that I could play them at many different tempos without hearing artifacts created when time expanding or compressing. This is a loop of the familiar Samba setting. I recorded it at 85 bpm, then cranked the tempo up to 195 bpm and looped it four times before rendering this example. 
