Zeitmasse is one of a group of four acknowledged masterpieces composed between 1955 and 1957 that together established Karlheinz Stockhausen as the leading figure in the European avant-garde. Of the four works, it is the only one that has not been thoroughly analysed from the composer's sketches and, for this reason, remains the least-well understood. In this volume, Jerome Kohl provides a much-needed analysis of Zeitmasse, considering its standing in the group and in the wider context of Stockhausen's output. Using recently published correspondence and other documentation...