Jonathan's musical mice: A coloring book includes a series of drawings showing cartoon mice. All characters are the author's original creations and each plays a particular musical instrument. Some instruments are associated with bands and orchestras while others are of the folk variety. Folk instruments are usually made from readily available materials rather than being manufactured in factories.
Jonathan's musical instrument collection is 154 pages long, including the introduction and reference section. The content is a series of captioned photographs showing musical instruments the author has made. Folk instruments are often made by hand and may be simple in design and construction. This is in contrast to instruments mass produced in factories. Also, some folk instruments are typical of specific cultures. Examples of these instruments are featured in this book: didgeridoos from Australia, shakuhachis from Japan, koncovkas from Slovakia, penny whistles from Ireland. This book is designed to inspire the reader to make his or own instruments, rather than being an instruction book.