The Play Time Recorder Course Stage 3 by Margo Fagan is a 32-page illustrated workbook designed for beginner musicians learning music theory on the recorder. Published by Longman Publishing Group in 1994, this American English-language book features various compositions and exercises to help players improve their skills. With a focus on music theory and practical exercises, this book is a valuable resource for those looking to enhance their proficiency on the recorder in a structured and interactive way.