to use reason normally without using a midi keyboard?

Man, very possible, but very, very boring!

Yes, you can "write" your notes with the pen tool, make some automations with matrix and redrum or anything else, but you will spend a lot more than if you have a midi surface. It's just like you count with a good car but the fuel.

Darbo

I use this when I am traveling. It basically turns your laptop or PC keyboard into a midi controller.

Bomes Mouse Keyboard

It's free and pretty slick.


Sound4mation