the time of his or her death,
whether or not the spouse has later remarried.

A "work of the United States Government" is a work prepared by any
officer or employee of the United States Government as part of that
person's official duties.

A "work made for hire" is--

(1) a work prepared by an employee within the scope of his or her
employment; or

(2) a work specially ordered or commissioned for use as a contribution
to a collective work, as a part of a motion picture or other
audiovisual work, as a translation, as a supplementary work, as a
compilation, as an instructional text, as a test, as answer material
for a test, or as an atlas, if the parties expressly agree in a written
instrument signed by them that the work shall be considered a work made
for hire. For the purpose of the foregoing sentence, a "supplementary
work" is a work prepared for publication as a secondary adjunct to a
work by another author for the purpose of introducing, concluding,
illustrating, explaining, revising, commenting upon, or assisting in
the use of the other work, such as forewords, afterwords, pictorial
illustrations, maps, charts, tables, editorial notes, musical
arrangements, answer material for tests, bibliographies, appendixes,
and indexes, and an "instructional text" is a literary, pictorial, or
graphic work prepared for publication and with the purpose of use in
systematic instructional activities.

Section 102. Subject matter of copyright: In general.

(a) Copyright protection subsists, in accordance with this title, in
original works of authorship fixed in any tangible medium of
expression, now known or later developed, from which they can be
perceived, reproduced, or otherwise communicated, either directly or
with the aid of a machine or device. Works of authorship include the
following categories:

(1) literary works: (2) musical works, including any accompanying
words; (3) dramatic works, including any accompanying music; (4)
pantomimes and choreographic works; (5) pictorial, graphic, and
sculptural works; (6) motion pictures and other audiovisual works; and
(7) sound recordings.

(b) In no case does copyright protection for an original work of
authorship extend to any idea, procedure, process, system, method of
operation, concept, principle, or discovery, regardless of the form in
which it is described, explained, illustrated, or embodied in such work.

Section 103. Subject matter of copyright: Comp