Tommy and the Magical Dance

The story of young boy called Tommy who stumbles across a secret tree house being built at the bottom of his garden. He can see that lots of different animals and birds are busily helping with the building work and, much to his surprise, Tommy also finds out that the animals and birds can actually talk. Indeed, one by one, they tell him that once the tree house is finished, he will be very welcome to visit. However, before he can go into the house, he must first complete The Magical Dance but one part of the dance is very, very, difficult! How will Tommy find out how to perform The Dance and what is the part of it that is so difficult?