The Ancient Greek word Kalon was used by philosophers to describe perfect physical and moral beauty. In this recording, the Albion Quartet and the Czech Philharmonic explore the different aspects of Kalon through the context in which beauty can exist in ugliness and darkness. This record is the result of Richard Blackford's doctorate at the University of Bristol, which investigates the use of polytempo. The recording is a way of applying the findings of his doctorate in a range of musical contexts. Kalon is unique as it explores the use of polytempo in the context of extended tonality and modality, which could be said surpasses the complexity posed by serialist works of a similar nature, such as Stockhausen's Gruppen or Carré.