1976 Copyright Act provides for the termination of copyright transfers – but authors need to act within a limited timeframe. Creators are entitled to reclaim their copyrights regardless of any contract stating otherwise after certain time periods. Therefore, even if an author, artist, musician, photographer or songwriter signed a contract which purports to transfer all rights in a work for perpetuity, the Copyright Act provides that the author of the work can terminate that grant and demand that the rights revert. Authors and creators are now entitled to terminate their contractual transfers and demand back control of their copyrights; authors can terminate their book publishing contracts, songwriters can demand return of their musical compositions from music publishers and recording artists and record producers can demand return of their sound recordings from the record companies.