Rodda, Emily.

The key to Rondo / by Emily Rodda. - New York : Scholastic Press, c2008. - 342 p.

Through an heirloom music box, Leo, a serious, responsible boy, and his badly-behaved cousin Mimi enter the magical world of Rondo to rescue Mimi's dog from a sorceress, who wishes to exchange him for the key that allows free travel between worlds.

ISBN: 9780545035354 (hc) ;

Subjects--Topical Terms:
Space and time--Fiction.
Adventure and adventurers--Fiction.
Magic--Fiction.
Witches--Fiction.