Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sci-Fi classic LP in super CD transfer

What a treat to hear Exploring the Unknown in this excellent CD import! In comparison to my well-worn RCA LP, the mid-Fifties monaural sound has been cleaned up immaculately. Paul Frees' narration is placed solidly over The Voices of Walter Schumann's spectacular performance of Leith Stevens' colorful and dramatic score. The rocket blastoff in the first track was used in the opening countdown of the OTR program X Minus One. Some highlights are the virtuoso choral ensemble work in The Comets and the sensuous soprano solo in The Heavens. Amazon's price may seem high until you check out the used market.