Jam-Hat demo

hb.py

from jamhat import JamHat
from time import sleep

hat = JamHat()
    
tune = ['G5', 'G5', 'A5', 'G5', 'C6', 'B5', 0,
        'G5', 'G5', 'A5', 'G5', 'D6', 'C6', 0, 
        'G5', 'G5', 'GS6', 'E6', 'C6', 'B5', 'A5', 0,
        'F6', 'F6', 'E6', 'C6', 'D6', 'C6']

tempo = [0.5, 0.5, 1, 1, 1, 1, 1,
         0.5, 0.5, 1, 1, 1, 1, 1,
         0.5, 0.5, 1, 1, 1, 1, 1, 1,
         0.5, 0.5, 1, 1, 1, 1]

row = [hat.lights_1, hat.lights_2]

count = 0
for note in tune:
    if(note == 0):
        row[count % 2].off()
        sleep(tempo[count])
    else:
        row[count % 2].on()
        hat.buzzer.play(note)
        sleep(tempo[count]/2)
        hat.off()
        sleep(0.1)
    count += 1
hat.off()

jamhat.py

from gpiozero import CompositeOutputDevice, LEDBoard, Button, PWMOutputDevice

class PWMBuzzer(PWMOutputDevice):
    def __init__(self, pin=None, active_high=True, initial_value=0, frequency=100,
            pin_factory=None):
        super(PWMBuzzer, self).__init__(
            pin=pin, active_high=active_high, initial_value=initial_value, frequency=frequency,
            pin_factory=pin_factory
            )
    
        self.notes = {
            'G5': 783.991,
            'A5': 880.000,
            'B5': 987.767,
            'C6': 1046.50,
            'D6': 1174.66,
            'E6': 1318.51,
            'F6': 1396.91,
            'G6': 1567.98,
            'GS6': 1661.22,
            }
        
    def play(self, note):
        self.frequency = self.notes[note]
        self.value = 0.5 # self.magic_num #for pwm

class JamHat(CompositeOutputDevice):
    # Set up a star using GPIO Zero to build a class.
    # To use:
    def __init__(self, pwm=False, initial_value=False, pin_factory=None):
        super(JamHat, self).__init__(
            lights_1=LEDBoard(red=5, yellow=12, green=16,
                              pwm=pwm, initial_value=initial_value,
                              _order=('red', 'yellow', 'green'),
                              pin_factory=pin_factory),
            lights_2=LEDBoard(red=6, yellow=13, green=17,
                              pwm=pwm, initial_value=initial_value,
                              _order=('red', 'yellow', 'green'),
                              pin_factory=pin_factory),
            button_1=Button(19, pull_up=False, pin_factory=pin_factory),
            button_2=Button(18, pull_up=False, pin_factory=pin_factory),
            buzzer=PWMBuzzer(20, pin_factory=pin_factory),
            pin_factory=pin_factory
            )

Given that the else part does hat.off() I suspect that the row[count % 2].off() line is redundant?