import machine
import utime

button = machine.Pin(15, machine.Pin.IN)

NOTE_C4 = 262
NOTE_G3 = 196
NOTE_A3 = 220
NOTE_B3 = 247

melody = [NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, NOTE_B3, NOTE_C4]

buzzer = machine.PWM(machine.Pin(20))

def tone(pin, frequency, duration):
    pin.freq(frequency)
    pin.duty_u16(30000)
    utime.sleep_ms(duration)
    pin.duty_u16(0)

while True:
    if button.value() == 1:
        print("You pressed the button!")
        for note in melody:
            tone(buzzer, note, 250)
            utime.sleep_ms(150)