Beelzebub I
Georges Ivanovich Gurdjieff
Encyclopedia of Buddhism
Edward A. Irons
What Is Music?: An Introduction to the Philosophy of Music
Philip Alperson
Formalized Music: Thought and Mathematics in Composition
Iannis Xenakis
General Linguistics
Edward Sapir & Pierre Swiggers
What Man Has Made of Man - A Study of the Consequences of Platonism ...
Mortimer Jerome Adler