Look at toys, Nanny! They're little Betsy's toys now! What's this? It's a tea set. Look! This is my elephant and that's my rocking horse. Whose is this musical box?? It's mum's.. Listen! .Oh,, what's wrong?? Let me see... Try again Larry! Wow! Thank you, как сказать по английски

it doesn't work можно еще сказать "не работает"

Something is wrong with the box! Try to fix it. WOW! It works again. Thank you. Как я поняла Вам надо сказать, что музыкальная шкатулка не работает, и чтобы Larry  починил ее. =)