Our daughter finally wore Tad out
We bought this for our daughter when she was about 6 - 9 mos old. At first all she could do was sit and listen to it. As she grew she learned to press the shapes and sing the songs. She occasionally became frustrated because Tad would not play the song she wanted (he only plays the song of the correctly pressed shape). Eventually she wore Tad out.At about 18 months old we put Tad in the garage (awaiting the next baby). Tad was having problems occasionally he would get stuck on a song. Endlessly looping through the lyrics. This might be do to a low battery, but I have not checked.Either way this is a great toy for an infant to learn from.