why is 12.

[Beatrice7]

%12 because it wraps in B->C and starts over.

why is 12.

and

" e.g. the fifth of

E is: (E F G A) B."

what it's meaning?

thanks for your answer.

[Beatrice7]

* _old_note is the index in the list of the old note tone.

    # * new_note_tone is calculated adding the interval_number-1 because
    # you have start counting in the current tone. e.g. the fifth of
    # E is: (E F G A) B.

in this.

[fferri]

What is this about?