Mr. Sinfield, who once referred to himself as the band’s “pet hippie,” linked up with Mr. Fripp in 1968 after living an itinerant life in Spain and Morocco. He was the lyricist on the first four King Crimson albums, starting with “In the Court of the Crimson King” in 1969, which is widely regarded as the first album in the genre that came to be known as prog rock.
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Peter Sinfield, Lyricist for King Crimson, Dies at 80
His swirls of poetic imagery helped define progressive rock in the 1970s. He later turned his focus to pop acts like Celine Dion.