I recently acquired a Casio RZ-1 that still had 57 out of 60 of the factory patterns (including the three conga sounds assigned to the sample pads) untouched in memory.
I looked at the RZ-1 Pattern Samples booklet and fixed the three patterns that the previous owner had rewritten, and so here is a little treat for you all - a dive back into 1986, all sixty original RZ-1 factory patterns are here in this video for you to hear - just like if you were buying this drum machine brand new in 1986.
The machine also came with the original cassette with many additional samples, so I'll do a video with those in the future. I will also create a .wav dump of the factory patterns and put it online, for anyone who has an RZ-1 and wants to check out the original factory patterns.
I also wrote the descriptions of each pattern that's written in the RZ-1 Pattern Samples book. It's a great way to learn how some classic rhythms are programmed.