The Solution – how can a child be motivated to do something twice a day, for an effective length of time, every day? The free Brush DJ app motivates children to brush for two minutes by playing music, taken either from a playlist, or randomly, from the music stored on the user’s device and cloud. The idea of using music to motivate brushing for longer is not new, but listening to music in the bathroom has only become practical with the development of mobile devices with built in speakers.