I am going to start out saying that I love Glee and it is probably my favorite show ever on television (next to Friends, of course). Enthusiastically, I bought this product along with the soundtracks, DVD, shirt, etc. I was convinced this compilation of sheet music from Glee were in the arrangements used in the television show and soundtrack. My highschool child was planning to put together a performance group to learn, choregraph, and perform Somebody to Love in the style of Glee, but when we got the book it only included the original Queen arrangment. All of the songs are in their original form, not in the style of Glee. So if you are just looking to expand your music variety with random songs, this book is for you. But if you are looking to buy this book because you would like to have the music in the Glee arrangments (Girl/Guy Mash-up, glee's performance of Somebody to Love,the group arrangment of Dont Stop Believin with the "Da's", etc.) this book is NOT for you. It is simply a collection of songs used on the tv show, put together in a book. Long story short, I returned my package, unhappy with its content and the lack of this information included on Amazon.