[wppxzqmr] Musical key dice

Create a d12 die marked with the 12 notes of the chromatic scale.  The application is to randomly pick what key to play in.  For major keys, F-sharp and G-flat are both common names for the uncommon key.

This could easily also be done with a standard d12 die: just count up the scale the given number of half steps from some standardized start note, probably C.