The big center button allows children to operate the melody alone but in my case it's horrible. Indeed my son pressed constantly and suddenly the melody again from the beginning with the famous sentence: 'Do with beautiful dream ... "which eventually looping ......
Another criticism, the projection is of poor quality, the picture is fuzzy on certain sequence and needs to be in total darkness.
I personally prefer a similar price for the pilot Tomy Magic Star. Even if it has only one melody, at least it's a complete melody and more I find the better projection.
To summarize, I'll quickly resell this pilot to the next garage sale.