Grace Woollyhop's Musical Mystery (Magic Animal Friends #12)
Grace's friends in the choir are understandably upset when their secret is discovered, since they wanted their performance to be a surprise. Since this series does talk a lot about finding out the secrets of others, it is good that there is always some discussion about when it is appropriate to tell someone's secret. If the person is in danger of becoming a toad unless the secret is revealed, always tell!
Adorable talking animals who have adventures is a hallmark of this series, which I can see being popular with readers who liked Soderberg's Puppy Pirates books. Since there is also a mystery to be solved in every book, readers who enjoyed Mlynowski Whatever After series could be tempted by these titles as well.