Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Must have!

Luiz Melodia's first record is a mature work, beautifully composed and played. Although it may look deceitfully simple, his music is very sofisticated, very melodical (after all, Melody is his last name ...), so smooth and soulful that he will warm up your heart.Special attention to "Estácio holly Estácio", which was his first national hit and it's permanently recorded in my memory. Just listen and you'll understand why ...