Here is a Yamaha CS-60 that we have had in storage since around 1996. It is in exceptional condition. These are normally fairly beat up because of their size and weight. Our friend Duron Kochli is playing this beast. Big City Music (bigcitymusic.com)
This 20 minute tutorial shows how to program analog-style hardware and software synthesizers. Topics include oscillators, ADSR envelope generators, filters, LFOs, and much more. Waveforms are shown on an oscilloscope to better understand what's happening under the hood.