Weird MIDI scaler idea

I wonder if anyone has come across something like this - I want to find / make a scaler that will play a new note from the selected scale wherever I play.

Ok to contrast - If you select say a C Minor Pentatonic in the Ableton scaler, it will play the same note on quite a few keys - e.g. C, C# and D will probably all play C.

What I want is a scaler that basically ignores the keyboard and plays you a new note every time, crushing the scales down, e.g. for a C minor pentatonic:

C plays C
C# - D#
D - F
D# - G
E - A#
F - C

and so forth. Does this already exist? If not can anyone suggest how to make it? Thanks!