This soft bristle toothbrush is an excellent way to encourage independent brushing habits.  During the 2 minute song, your child will learn better brushing techniques.  To increase the volume of the song increase your brushing pressure.  If you brush well, you will get great sound, but if you do not put enough pressure the sound will decrease.  This brand of toothbrush makes different types with different songs, so browse around and find the right fit for your child!