I just bought two for gifts for my toddler who loves music boxes and relatives in the US who we'll be staying with. But I can't make them work! I rotated them but they just give out alarming clangs and creaks then stop. Can anyone advise me or am I going to have to trudge back to M&S to return them? (where, incidentally, a hostile staff member pounced on me to say I was not allowed take photos - I took a photo for DP to ask ifhis mum would like one..)