def on(self, tone, time=0):
if tone not in self.sub_instruments:
self._add_synth(tone)
PolyphonicInstrument.on(self, tone, time=time)
def __init__(self, sample_rate, buffer_size, scale):
PolyphonicInstrument.__init__(self)
self.sample_rate = sample_rate
self.buffer_size = buffer_size
self.scale = scale