(Not tested will need battery’s )"SESAME STREET ELMO'S ROCK STAR GUITAR" is an interactive music book that was published in 2011 and features Elmo from the popular children's show. This hardcover book, part of the Sesame Street series, is designed for young readers and musicians. Written by the Sesame Workshop Staff and published by Publications International, Ltd., the book explores the world of music through Elmo's fun and engaging way. With topics ranging from genres and styles to music history, this book is a perfect blend of entertainment and education for young music enthusiasts.o