Two of the compositions for the album, "Solar Musick Suite" and "Salmon Song", were among those considered back in 1972 for a second Khan release; both were in an incomplete state but now expanded and finished for the new solo project.

This success, compounded by Daevid Allen's abrupt departure from Gong on the day before the album's release, encouraged Hillage to leave the band by the end of 1975 and begin a proper solo career with no Gong-associated musicians outside of his girlfriend Miquette.

[3] Upon release, a review in Disc gave a largely positive appraisal, opining "Hillage's guitar work is impressive and...produces some excellent passages of tight, funky blowing" yet also stated that some of the "cosmic stuff" and lyrics were tiring.

[1] Simon Reynolds at Uncut raved "the guitarist’s flashy pyrotechnique is frequently a thing of sheer splendour",[5] while Udiscover concluded it was "a far-reaching space-rock soundscape that set the scene for Steve’s huge solo success of the ensuing years, notably with the follow-up L."[8] In 2007, Virgin issued a re-mastered version with two bonus tracks.

"Pentagrammaspin" was an outtake from the sessions that had originally appeared on the Virgin V sampler album in 1975, while the "power trio" backing version of "Aftaglid" consisted only of Hillage, Howlett and Moerlen.