Yeah, it really does seem like you can bodge something like this together with reasonable fidelity out of off the shelf stuff, starting with 3-4 synthesizer key

Yeah, it really does seem like you can bodge something like this together with reasonable fidelity out of off the shelf stuff, starting with 3-4 synthesizer keyboards and a few pedals. Of course, that's no small expense right there already, and I'm sure this is one of those things that can get arbitrarily expensive as well, depending on that level of fidelity you're after.