How to Copyright a Song or Music
The copyrighting of musical compositions, however, do fall under compulsory licensing provisions of copyright law. This means that after you make and distribute the original sound recording, other individuals may make their own recordings of the material, provided that they pay you a fee known as a “royalty”. More information on the compulsory licensing of musical compositions can be found in Circular 73, distributed by the Copyright Office.
Like most works, musical compositions are automatically considered copyrighted the moment that they are created, but there are certain advantages that can be had from registering them with the copyright office. For one thing, it provides a very clear and irrefutable legal precedent in the event that arguments about original authorship ever arise. In addition, if someone makes unauthorized use of your work, you generally aren’t allowed to file an infringement suit unless you have first registered your copyright.
If you intended to register a copyright for your musical composition, be sure to read everything you can about it to ensure that you are using the correct forms. Different forms exist for collections of music, published and unpublished music, new editions of previously published music, etc. Ensuring that you are using the proper forms will help to avoid any problematic issues with copyright in the future.