Didn't buy on Amazon, but wanted to write a review.  My daughter loved them in the beginning.  She and her friends were making wishes on the them (with the music).  However, once she got to school the twinkle music was a bit distracting.  Teacher said that it wasn't too bad, so we went with it (some teachers I know would not like that).  Now she has only been wearing them a total of 2 weeks, the music (twinkle sound) goes off all by it-self!  When I bought them, the lady at the store said that there is an on and off switch, yes there is but only for the lights NOT the music.  The shoes are pretty and my daughter loves them but they have got to go back!