The pipe organ is truly the King of Instruments with its fascinating and powerful sound. Pipe organs are beautiful to look at, breathtaking to listen to, difficult to understand and full of secrets! Do you know anything about what is hidden behind an organ's grand façade? How many pipes does an organ have? How does an organ work? What does an organ builder's workshop look like? All of this and much more will be explained in this book accompanied with many colourful and informative pictures. For all children and parents who would like to discover the secrets of the pipe organ.