Hi, I’m desperate to locate an old children’s book for a friend and all he can remember is that it was a story about a man who wore a top hat, and traveled along a river meeting various people and animals and taught a group of frogs to sing and used a tuning fork. Purple cover (?) UK, Please help!
I think it’s Haddock McCraddock, by Wendy Smith (1978). The title character is a spoon player turned tramp. A picture of the cover is here: http://www.horsebooksplus.com/shop_image/product/25553.jpg