Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: A book definitely worth reading!

Singer of All Songs is a short, captivating novel. This book took me from this world to a world full of magic and other wonders that you can only get through reading. Calwyn and her friends go on an epic adventure to stop the evil and ambitious, Samis, from trying to conquer all of Tremaris by becoming the 'singer of all songs'- possessing the ability to sing all the chantments.Kate Constable created a world that is unlike any other. How amazing it would be to be able to create ice, wind, fire, etc... with song, or as in Halasaa's case, through dance and body movements.This novel is definitely worth reading, as well as the other two books in the trilogy!