What makes Cadmium by Sky notable?

'Cadmium' is notable for its ambitious compositional structures and complex arrangements that showcase the band's virtuosity. The album received positive critical reception and helped further establish Sky's presence in the progressive rock scene during the early 1980s, contributing to the revival of instrumental rock music at the time. Released in December 1983, 'Cadmium' was Sky's fourth studio album, following their successful 1982 release 'Sky 3'. At this point in their career, Sky was solidifying their reputation within the progressive rock genre, known for their unique fusion of classical influences with rock instrumentation. The band was also experiencing a transition as they sought to expand their musical palette beyond previous works.