Elvis sold his artists rights in 1973:
In March 1973, Elvis and and his manager, Colonel Tom Parker, went to the record company proposing that Elvis get a large lump sum payment in lieu of all his future artist's royalties for ongoing sales of anything he had recorded up to that time. The deal was made. RCA paid $5.4 million, which Elvis and the Colonel split 50-50. That meant Elvis no longer got (EPE today does not get) his artist's royalties for the ongoing sales of any recordings created before the March 1973 deal. However, Elvis did continue (EPE today continues) to get his artist's royalties on sales of recordings created after the March 1973 deal.
Totally separate from the ownership of Elvis' recordings is the ownership of the songs themselves. Elvis recorded over 700 songs. Elvis, throug
Elvis did not sell his publishing interests.
The 1973 deal regarding Elvis' artist's royalties had no effect on his publisher's royalties. Elvis continued to get (EPE still gets) his publisher's royalties on sales of recordings of songs he had publishing interest in, no matter what date they were recorded.
Maybe Plants deal was something similar?