Cornelius Cardew's Treatise Handbook.

Includes the scores for both Bun No.2 and Volo Solo. Much of the spiral bound book is text, however, including an introduction, the working notes for Treatise, a "Resume of pre-publication perfomances" of Treatise, plus 2 essays ("On the Role of the Instructions in the Interpretation of Indeterminate Music" and "Towards an Ethic of Improvisation") and a short essay by Michael Chant called "Responses to Virtues, for Theorizing."