This doesn't sound like an improv at all!!! (take that as a compliment)
I really wonder how you guys can do this! I've been wondering, can you guys really just play what you want? What I mean is, say if I want to say something, I know that I can say it, and I know exactly what I'll say. If I'm just learning a new language, it might be hard, and I might make mistakes, but I can still basically get an idea of what I want to say.
Is playing the piano like that for you guys? Because for me, I have absolutely no idea what sound will come out when I press a key, so all my improv is completely random noise. I know what I want to say, but I don't know how to say it.