Gentle Giant

Gentle Giant were an English progressive-rock band, active 1970--1980, built around the three Shulman brothers (Phil, Derek and Ray) plus Kerry Minnear, Gary Green and a succession of drummers. Influential albums Acquiring the Taste (1971), Octopus (1972), In a Glass House (1973) and The Power and the Glory (1974) combined medieval and Renaissance counterpoint, jazz arrangement and rock instrumentation in a famously demanding, multi-layered style that has remained a touchstone of complex prog (Wikipedia)