SFX_Surfing_Flip_Ch5: duty_cycle 2 square_note 3, 12, 4, 1888 square_note 0, 10, 4, 1856 square_note 2, 12, 4, 1856 square_note 0, 10, 4, 1888 square_note 15, 12, 1, 1888 sound_ret