Seelie Court - the world's premier label for rare and previously unreleased archive recordings of underground folk, rock, proto-metal, and psychedelic music presents. The Castle's Equivalent. Rudi Tchaikovsky's music changed fast during their short run, moving from rhythm and blues-based club sets into more ambitious, progressive writing built on longer forms, shifting moods, and a broader musical reach. Recorded in the Netherlands in March 1975, this performance captures a band drawing together strong rock foundations, touches of jazz, and a developing sense of scale, with songs that move between reflective themes, rich instrumental detail, and the restless energy that defined British progressive music in the early seventies.