The Copyright Revision Act of 1976 includes a provision granting songwriters the right to recapture the copyrights to their songs. YES YOU READ THAT RIGHT. The copyrights to your songs may not be gone forever. Although the specifics are complicated, generally speaking, songs you signed away after 1978 are eligible to be recaptured after 35 years; songs you signed away before 1978 are eligible to be recaptured after 56 years.
This could be one of the most important matters of your career, for you and your heirs.
For more information, visit the links below, then consult a lawyer or specialist in copyright recapture.