Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: The greatest Heart songs you've never heard

If you are only a casual Heart listener you may be familiar with the title track and 'Straight On' thanks to the radio. However 'Dog & Butterfly' should be listened the whole way through to be appreciated. The second side should not be divided into separate tracks ('Dog & Butterfly', 'Lighter Touch', 'Nada One', and finally 'Mistral Wind'), but should be listened to the whole way through to truly reach the place where Ann's vocals want to take you.You'll never hear finer vocal work than Ann Wilson, and you'll be hard pressed to find better Ann Wilson than 'Dog & Butterfly'. Her haunting voice brings forth such emotions as wanting, hurting, and yearning, but also demands attention, and can grow into a rage. If there is a better female vocalist than Ann Wilson I never heard her, and probably no one else has either.