Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Demanding (but rewarding) Synth Master's 1st

Schulze's first ever solo recording (from 1972)strangely, uses no real synthesizers at all (quite a feat for someone known as the premiere synth player in electronic music in the last 30 years), but rather features Klaus on Organ and various electronic devises (sound effects might be more appropriate here) along with an electronically enhanced real string orchestral section. Very difficult, the music suggests a slightly eerie, barren winter landscape, and for the more attentive listener, quite a treat. This music is not for Schulze's fans of his later rhythmically charged drum machine rock music, but for listeners of avante-guarde music, and the Stockhausen's and Cages of the world, this is really a masterpiece. Too bad Schulze didn't do more of this before moving into a more Progressive Rock arena.