What makes Heresie by Univers Zéro notable?

'Heresie' is significant for its influence on the chamber rock genre and for contributing to the development of the Belgian progressive rock movement. It received critical acclaim for its innovative use of classical instrumentation within a rock framework, attracting attention from both fans and critics alike. Released in 1979, 'Heresie' was Univers Zéro's second album, following their groundbreaking debut '1313'. This album marked a pivotal moment as the band further explored the darker and more avant-garde corners of progressive rock, solidifying their reputation within the European experimental music scene.