'Increase the resolution of a LeadSheet.
Increases the resolution of a LeadSheet object by a factor of `k`. This
increases the resolution of the melody and chords separately, which uses
MELODY_NO_EVENT to extend each event in the melody, and simply repeats each
chord event `k` times.
Args:
k: An integer, the factor by which to increase the resolution of the lead
sheet.'

def increase_resolution(self, k):

    self._melody.increase_resolution(k)
    self._chords.increase_resolution(k)
