The Space Box contains three discs of prog rock and art rock, as well as trance-inducing Kraut rock, from the early '70s. Most of this music was inspired by the sonic experimentalism of late-'60s Pink Floyd – it builds on the long, free-form coda to "Interstellar Overdrive." There are subtle differences between the bands – for instance, Hawkwind tends to lean toward hard rock more than their contemporaries, who explore psychedelia and classical music flourishes. Even though the set is well compiled and contains some fine songs (Faust and Gong sound particularly good), there's no denying that there is a limited audience for this, even among prog-rock fans. It's experimental music that is oddly limited, working the same vibe, if not the same sound. If you're not a fanatic of space-rock, then the three discs of The Space Box will simply be too much to digest.
One of the greatest recordings ever made by John Coltrane in his late years – a spare set of duets with drummer Rashied Ali, recorded in 1967, but never issued until after his death! Trane and Ali play in a free spiritualist mode, with no other accompaniment – making for a very unique album, especially for the time, and setting the tone for years of New York improvisation in the 70s. Titles include "Mars", "Venus", "Jupiter", and "Saturn".