[Isamu]

Excerpt from https://www.copyright.gov/circs/circ50.pdf :

"The copyright law of the United States provides for copyright protection in “musical works, including any accompanying words,” that are fixed in some tangible medium of expression. 17 U.S.C. §102(a)(2). Musical works include both original compositions and original arrangements or other new versions of earlier compositions to which new copyrightable authorship has been added.

"The owner of copyright in a work has the exclusive right to make copies, to prepare derivative works, to sell or distribute copies, and to perform the work publicly. Anyone else wishing to use the work in these ways must have the permission of the author or someone who has derived rights through the author. note: Copyright in a musical work includes the right to make and distribute the first sound recording. Although others are permitted to make subsequent sound recordings, they must compensate the copyright owner of the musical work under the compulsory licensing provision of the law (17 U.S.C. §115). For more information, see Circular 73, Compulsory License for Making and Distributing Phonorecords.

"Copyright Protection Is Automatic

"Under the present copyright law, which became effective January 1, 1978, a work is automatically protected by copyright when it is created. A work is created when it is “fixed” or embodied in a copy or phonorecord for the first time. Neither registration in the Copyright Office nor publication is required for copyright protection under the law.