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17 Bull. Copyright Soc'y U.S.A. 311 (1969-1970)
Copyright Registration for Aleatory and Indeterminate Musical Compositions

handle is hein.journals/jocoso17 and id is 339 raw text is: Keziah. Aleatory and Indeterminate Music.           311
PART I.
ARTICLES
131. COPYRIGHT REGISTRATION FOR ALEATORY AND
INDETERMINATE MUSICAL COMPOSITIONS
By DOROTHY PENNINGTON KEZIAH
Introduction
The creative activity of artists in general and musicians in par-
ticular responds to and reflects the social, political, technical, and philo-
sophical climate of the society in which they live. Changes in the thought
patterns of this society and shifts in values result in changes in the forms
of their artistic expression. These new forms frequently create new copy-
right problems.
The purpose of this paper is to discuss the development of two new
forms of musical expression, aleatory and indeterminate musical compo-
sitions, and the problems they present with respect to copyright
registration.
Aleatory and indeterminate musical compositions should be dis-
tinguished from a number of other new forms of musical expression,
namely, tape studio music (electronic, concrete, and tape-music), syn-
thesizer music, and computer-produced mechanical music. Although
the period of ultrapurism in avant-garde music is pretty well finished
and various musical forms are, particularly in recent works, now being
freely combined in a single work, a number of basic distinctions may
still be drawn.
Aleatory and indeterminate compositions are essentially works in
which the sounds are produced live by live performers during the course
of a live performance. The other three forms of music involve tape
recorded sounds, i.e., sounds that the composer, with the aid of electrical
equipment, has arranged and prepared for performance on two or more
tracks of magnetic tape (or a disc copy of the original tape) and specifically
designed to be heard through loud-speakers. The three methods of
Head, Music Section, Examining Division, Copyright Office. The views
expressed in this article are those of the author, and do not necessarily
represent the official position of the Copyright Office.

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