music law book.
It’s the law. Listing the correct co-authors on the application – that is, the persons who made material contributions to the songwriting -- isn’t just a matter of fairness, it’s the law. Making false statements – if they are discovered -- may be labeled as fraud on the Copyright Office and could invalidate the registration. Of course that hasn’t prevented abuses – for example, some performers have demanded and gotten songwriting credit as a condition of performing a song.