Shine on Brightly was influential in the development of progressive rock by breaking all pop and rock music standards with the 17-minute epic "In Held Twas In I", which marked the beginning of the lengthy progressive rock suites that would occur later in the 1970s…
Despite the departure of organist Matthew Fisher, Procol Harum survived, and this album is ample proof. Fisher was one of the prime architects of the Harum sound, and his work on such classics as "Shine on Brightly" and, of course, "Whiter Shade of Pale" underline that. Procol continued as a four-piece, and it was indeed a good thing that they decided not to replace Fisher…
The fourth album by Procol Harum was released as the band was in the midst of a significant shift. With the departure of organist Matthew Fisher, guitarist Robin Trower stepped more to the fore. The two-keyboard approach was still being utilized, with singer Gary Brooker's piano being joined on some selections by the organ playing of multi-instrumentalist Chris Copping. However, the stately grandeur that had been previously applied with grace and subtlety gave way to a band that rocked much harder…