Its many features include a built-in speaker (no dangerous cords for the little ones) and built-in microphone. Maximum volume can be set so the baby's ears are safe and the music can fade away over time to lull baby to sleep. Of course, a large amount of material can be easily downloaded to the toy as it is a fully functional MP3 player. Baby Bidou has contracted artists to compose and record tunes especially for young children. The songs can be purchased at http://www.babybidou.com/.