All the instruments I play in this video create sounds using physical sound modeling (not samples).
Combination of three physical sound modeling technologies: PIANOTEQ, YAMAHA, VISCOUNT PHYSIS

    H. Ruckers Harpsichord L8'+U8' (PIANOTEQ)
    organ Viscount SONUS 60 (Rohrgedackt 8B')
    YAMAHA WX-5 + Wl70-m (WX Horn)

https://youtu.be/HBu2kcyfVtU?si=UDbKoqyHivTNpa4G

Great Idea !

I have an EL-900 which offers limited VA instruments but can be expanded through Beesoftware's Voodoo!. I might post something just for the fun of it using this technology. The Electone offers, initial touch, horizontal touch and aftertouch (channel) which is quite a lot to control a mono sound - so might be interesting.

I do envy your 3-manual beast !

Thanks for posting / sharing.

    H. Ruckers Harpsichord L8'+U8' (PIANOTEQ)
    organ Viscount SONUS 60 (Rohrgedackt 8B')
    YAMAHA WX-5 + Wl70-m (WX Horn)

https://youtu.be/HBu2kcyfVtU?si=UDbKoqyHivTNpa4G