The predecessor of Apryl Fool were Floral, a band created by the Japanese Monkees Fan Club in February 1968.
[2] Floral split due to artistic differences and Apryl Fool was formed on April 1, 1969, with a new bassist (Haruomi Hosono) and a new drummer (Rei Matsumoto).
[1] The name Apryl Fool was derived from the date of the band's formation and from the idea that "with this name, we can do things quite freely without being elaborated upon or irresponsibly".
[3][1] In a retrospective review Sean Westergaard of AllMusic described the album as "a great mixture of hard psych and blues-rock".
[4] Only two of the tracks are sung in Japanese ("Suite: Mother Earth" and "Dark Sunday"), as the band believed that "only English could be used to understand the reaction in other countries.