⌂ Transposing pitches with minimum accidentals ("Smart" transpose)
This example uses some Scheme code to enforce enharmonic
modifications for notes in order to have the minimum number of
accidentals. In this case, the following rules apply:
Double accidentals should be removed
B sharp -> C
E sharp -> F
C flat -> B
F flat -> E
In this manner, the most natural enharmonic notes are chosen.
