Michael D. Fowler (2017) Kōan-like ambiguities in John Cage’s Electronic Music for
Piano: a novel application of formal concept analysis. Journal of Mathematics and Music, 11(1) pp. 20-41.
The above article contains errors. The details of the copyright holder is missing from the captions for Figures 1 and 2. The figure captions should read as follows:
Figure 1. Notation “AY” from Cage’s Concert for Piano and Orchestra, from Edition Peters No. 6705, ©1960 by Henmar Press Inc., New York. All Rights Reserved. Reproduced by permission.
Figure 2. Complete score of Cage’s Electronic Music for Piano, from Edition Peters No. 6801, ©1960 by Henmar Press Inc., New York. All Rights Reserved. Reproduced by permission.
The author apologizes for these errors.