Korg MS2000, and Reason's subtractor and malstrom softsynths. It's true to say that synths are all different, but with analog/virtual analog synths there are a lot of things that are the same.. the principles behind oscillators, lfo's, envelope generaters, filters, etc are pretty much the same from one synth to another. Although the interface may be slightly different, the course is also intended to illustrate the differences, and show students how to adapt their synth "skillset" from synth to synth. It's really not much of a consideration to be honest. -L-