YESTERDAYSAfter three years of unparalleled international success, Yes were at a crossroads in late 1974. Star keyboard player Rick Wakeman had exited the lineup in mid year, to be succeeded by Patrick Moraz, and the reconstituted band had released the Relayer album which reached the Top Five in America late that year. But despite that success and an impending tour, there was some doubt about the group's continued viability all five members were planning on