This is a great print-and-go plan for grades 3-5. Students read a book about the history of music notation and the story of Guido d'Arezzo, the inventor of modern notation. Students review some historical terms, answer discussion questions about the book, and then decode a short example of a Gregorian chant. A Guido-themed rhythm coloring sheet is available for early finishers. The book Do Re Mi: If You Can Read Music, Thank Guido d'Arezzo required for this lesson is available separately and is not part of the download.