Originally Posted by Mike Halloran
Quote
9: If you want to retain 100% copyright of the song with the new vocals make that clear from the start with something like this: "I am not just purchasing the vocals, but also the entire rights to said vocals, thus I alone retain 100% copyright of them. Further, I will not accept an NOC (No Objection Certificate)." [When an NOC is offered, the singer retains the copyright, but has no objection to you using them whether for profit or not].
Simpler:
This is a Work for Hire. You have no expectation nor are you entitled to share in any copyrights on this work.
If the song has air/internet play in any form and if the singer is a member of SAG/AGMA or AFM, then he/she is entitled to some of the performance/streaming revenues. You do not pay these, however—the streaming services etc. do and the respective Union collects and distributes those monies, not you, not ever.

Thanks for adding that Mike. Appreciated.

Some favourite Waoist Adages:
#1: Play on the Way.
#13: Ask not for whom the flower blooms, it blooms for you.
#58: Bring consciousness to it.
#63: On the road to effortlessness, effort must be made.
#92: Be Love Now, the rest will come on its own.