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60 or communicates the performance by turning on a receiving set. Although any act by which the initial performance or display is transmitted, repeated, or made to recur would itself be a “performance” or “display” under the bill, it would not be actionable as an infringement unless it were done “publicly,” as defined in section 101. Certain other performances and displays, in addition to those that are “private,” are exempted or given qualified copyright control under sections 107 through 117.

To “perform” a work, under the definition in section 101, includes reading a literary work aloud, singing or playing music, dancing a ballet or other choreographic work, and acting out a dramatic work or pantomime. A performance may be accomplished “either directly or by means of any device or process,” including all kinds of equipment for reproducing or amplifying sounds or visual images, any sort of transmitting apparatus, any type of electronic retrieval system, and any other techniques and systems not yet in use or even invented.

The definition of “perform” in relation to “a motion picture or other audio visual work” is “to show its images in any sequence or to make the sounds accompanying it audible.” The showing of portions of a motion picture, filmstrip, or slide set must therefore be sequential to constitute a “performance” rather than a “display”, but no particular order need be maintained. The purely aural performance of a motion picture sound track, or of the sound portions of an audiovisual work, would constitute a performance of the “motion picture or other audiovisual work”; but, where some of the sounds have been reproduced separately on phonorecords, a performance from the phonorecord would not constitute performance of the motion picture or audiovisual work.

The corresponding definition of “display” covers any showing of a “copy” of the work, “either directly or by means of a film, slide, television image, or any other device or process.” Since “copies” are defined as including the material object “in which the work is first fixed,” the right of public display applies to original works of art as well as to reproductions of them. With respect to motion pictures and other audiovisual works, it is a “display” (rather than a “performance”) to show their “individual images nonsequentially.” In addition to the direct showings of a copy of a work, “display” would include the projection of an image on a screen or other surface by any method, the transmission of an image by electronic or other means, and the showing of an image on a cathode ray tube, or similar viewing apparatus connected with any sort of information storage and retrieval system.

Under clause (1) of the definition of “publicly”, a performance or display is “public” if it takes place “at a place open to the public or at any place where a substantial number of persons outside of a normal circle of a family and its social acquaintances is gathered.” One of the principal purposes of the definition was to make clear that, contrary to the decision in Metro-Goldwyn-Mayer Distributing Corp. v. Wyatt, 21 C.O. Bull. 203 (D. Md. 1932), performances in “semipublic” places such as clubs, lodges, factories, summer camps, and schools are “public performances” subject to copyright control. The term “a family” in this context would include an individual living alone, so