"Relayer", along with "Tales From Topographic Oceans", is one of Yes's most difficult, inaccessible, and intricate albums, but by no means a lesser work. On the contrary, both are masterpieces of progressive rock, which, despite having less commercial impact, owed it to their complexity and, at the same time, their less harmonious and accessible side. In a way, "Relayer" follows the trend of the aforementioned "Tales From Topographic Oceans", released a year earlier. But the musical epic of almost biblical proportions that was "Tales From..." claimed its first victim in Rick Wakeman, who came to loathe the complex compositions based on Eastern philosophies that singer Jon Anderson and Steve Howe composed during countless hours between concerts on the "Close To The Edge Tour". Finally, after the tour following "Tales From...", Rick Wakeman left the band to pursue his solo career, which had already begun in 1973 with his album "The Six Wives of Henry VIII". Therefore, they had to find a replacement with the ideal qualities for the position. While Vangelis was initially considered, it was ultimately the Swiss keyboardist Patrick Moraz who was chosen. Patrick Moraz already had an impressive career with the bands Mainhorse and Refugee, the latter a progressive rock band in the purest ELP style, so his integration was quick and seamless, with no one missing the blond keyboardist with long hair and colorful layers. "Relayer" structurally consists of three extensive tracks, beginning with the jazzy and progressive "The Gates of Delirium", a prodigious 23-minute piece inspired by Tolstoy's "War and Peace", which is one of Yes's compositional and instrumental peaks. On the second side, we find the brutal “Sound Chaser”, which blends elements of free jazz and visceral rock with tons of progressive sounds, featuring an immeasurable and sublime Steve Howe on guitar. The album closes with “To Be Over”, a track brimming with moments of peace and solemnity, where Jon Anderson delivers an absolutely masterful performance. “Relayer” confirmed the band's shift away from accessible and melodic sounds, towards riskier and more experimental approaches, a direction that would keep them from releasing new albums for almost three years.

