Instruct: Classify an Amazon review as either positive or negative.
Query: solar

`Shleep' has been compared to `Rock Bottom', Robert Wyatt's early masterpiece made after he was paralysed. It's his best since `Rock Bottom', but the comparison goes further than that. `Rock Bottom' seemed to yearn for bodilessness and mobility thro' submergence in moonlit water. But `Shleep''s gorgeous, moving central track, `Alien', longs for the opposite: ascent into the ether, effortlessly supported by air in sunblind instinctual motion. Elsewhere, the delicious `Maryan' is just skybound because of its gorgeous melody; and back on Earth, `Free Will and Testament' again finds Robert wondering what it would it be like `to be not me'. Very varied and - despite insomnia - extremely poised, `Shleep' is a beautiful record. I think it's the best in the progressive rock genre for the last 20 years.