That's not a 76-note Tyros. I have a more challenging example of something I find interesting:
Carlos Wagner Dias of Boston, MA carwagdias@aol.com made this homemade dual-manual instrument using two Fatar keyboards and some modules. You can read the entire story here:
http://cdias.photosite.com/Keyboard-Rig/ The concept of building a custom keyboard is very attractive... I could really enjoy a project like that. Carlos' approach is inspiring because he cut the keyboards to the length he wanted and adjusted the action to fit his style. His choice of modules is good too but I'd probably want to go more with a softsynth approach, possibly using something like the Muse Receptor or even more ambitious would be to build a soft studio host computer right into the instrument. Well, it makes for nice daydreams at least.