I think this is a good book for learning musical theatre and voice, especially for teens and kids. However, I agree with a review below me; there are many songs in here that are overdone, and this is definitely a popular book. I always see people with this same book at auditions I go on, and (in my experience) everyone tends to do the same songs: Wouldn't it Be Loverly, I Could Have Danced All Night, On My Own, and Unexpected Song, to name a few. However, there are a few gems that people don't do as often: The Simple Joys of Maidenhood, It's a Most Unusual Day, God Help the Outcasts, etc. Even those, however, can be done over and over. This is great for the young, amateur performer, it offers good, age-appropriate songs that can really be helpful. The songs are mostly all in the mezzo range, very few go above an F on the staff or below middle C, and for the most part fall between a middle C and a D on the staff. An alternative to this book (if it doesn't sound like something you'd like) would be one of the Singer's Musical Theatre Anthologies, also in the Hal Leonard collection. They have three different (and are coming out with a fourth) volumes for each voice type, soprano, mezzo/alto, mezzo/alto belter, tenor, baritone/bass (I'm not positive those are all of them). There are more songs in them (I think there's forty-something in the first soprano volume) and have more obscure songs, much better for using on auditions.