EMI Records launched the Harvest label in 1969 to take advantage of the progressive rock market, and like many record labels at the time, they produced a budget-priced showcase album of their artists. Their roster of artists was large and interesting enough to support a double album retailing at 29s/11d (approximately £1.50). The result was an eclectic mixture of traditional folk, hard rock, psychedelia and obscurities.
The inclusion of Embryo, without the approval of Pink Floyd, and which the band considered unfinished, resulted in the album's prompt withdrawal. Some editions do not credit the track to Pink Floyd on the inside cover.listen here