The album that first gave shape to the established Yes sound, build around science-fiction concepts, folk melodies, and soaring organ, guitar, and vocal showpieces. "Your Move" actually made the U.S. charts as a single, and "Starship Trooper," "Perpetual Change," and "Yours Is No Disgrace" became much-loved parts of the band's concert repertory for many tours to come. Remastered in 1995, with significantly improved sound.