Non-Guitar Question

I've been experimenting with alternate tunings on my acoustic guitar and I wonder if there is amp/keyboard effect that simulates orchestral pitch-changes, say you want to play flat, can you? I know there are strings setting on a lot of keyboards but you can't control the sharpness or the flatness of the pitch.

I'm confused, if you are using a keyboard and you know what key you are playing in, why not just play the notes yourself?

Otherwise, use a pitch shifter.

Well, as it turns out I found a pitch transposer, one by MXR, but I"ll think I"ll stick with detuning my guitar for now.

Uh, err scratch that.

Same old response as the first response.

First response as the older response.

Same response equals first response equals older response equals same response.