In the Court of the Crimson King
His drumming technique is complex and polyrhythmic, based primarily on the jazz tradition, but also on the then developing progressive rock tradition. His playing dictated much of the compositional structure of the first King Crimson album "In the Court of the Crimson King", Giles's compositional ear is evidenced by his ability to weave seamless tempo changes and subtle melodic deviations into his drumming throughout the album.