Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An amazing one... if not the best!

This is an excellent album... the most complete, because you can find very powerful songs like "Aces high" and "Powerslave", and rhytmic like "2 minutes to midnight" and "Flash of the blade", not forgeting the mighty "Rime of the ancient mariner"Anything that comes from this album is amazing Just listen it and you will love Maiden foreverUp the Irons