Some of us older people might enjoy this virtual interactive GUI of the Mighty Wuritzer.

Follow the link, then go to getting started to download free. It immediately plays with computer mouse, but the real fun starts when you connect midi keyboards to it.

I have channel one(solo),attached now with a little Oxygen8 controller. I will put another on ch2(accompiniment), and ch3(bass pedals).

It is all rather amazing,
pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact