Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Astonishing, breathtaking and heavenly

I know nothing about the science of music but this album is, for me, pure magic. Heartbreakingly graceful and soaring at times. At others, there is such poignant longing in the angelic harmonies that it can overwhelm the emotions. Other songs are lighter, almost playful. Eri Sugai's voice is the most incredible "instrument" I have ever heard. I think it would put pure crystal to shame. My favorites are Horizon, Konjaku Monogatari, A Lullaby of Takeda, and Rakuen. Each of these songs has the ability to pierce my heart with their delicate, flowing, weaving harmonies. Simply astonishing. I thank the other reviewers for convincing me to take the chance with this album! It is a balm for a tired soul.