Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: A masterpiece.

This brilliant Italian progressive outfit made this recording in 1977 and then disapeared for over twenty years. A pity, as this recording is a classic. It stands equally with the finest of PFM, Banco del Mutuo Soccorso, Le Orme, Museo Rosenbach and other Italian progressive greats. The musicianship, compositions, vocals(in Italian) and production are all exceptional. Where there is a strong melodic sense throughout the arrangements are quite complex and rich. Not a weak cut in the entire 54 minutes of music. A must have for any prog fan, Italian or otherwise....Simon