All recording contracts say you can't re-record any song you recorded during the term of a deal for a certain period of time after the term. This is what is called re-recording restriction. This makes a lot of sense because you could go out the very next day after your deal is over and duplicate the same album. This is the reason for the restriction. Re-recording restrictions only apply to records, not for a film or commercial. Well the labels figured out that artist were recording for movies and commercial and not using the master. This cuts out the label so they added this re-recording restriction so they get paid. When making your own music, this means an artist can only use the master so everyone gets paid including the record label.