Interesting side story about the Stones and them actually cutting cheques.Credit yeah. Money no. (Just ask Robert Johnson's estate.) And lip service don't pay the rent as easily as a royalty cheque does.
We all know the famous "Gimme Shelter" Truly a rock anthem. Not just for Richard's iconic guitar work, but more so perhaps for the backup singing (some might even say lead singing) of one Merry Clayton. She completely steals the vocals from Jagger and over powers him and makes the song.
As legend has it, she met up with the Stones while they were recording Let it Bleed in LA and they were wowed by her voice and asked her to sing on Gimme Shelter. She goes in and just belts it out. Just incredible. So the Stones say, "we have to record this, you have to do the song"
And she says NO.
"Whadda ya mean no?"
"Not until I get paid. Paid upfront"
The Stones couldn't believe that she would have the audacity to demand to be paid up-front. (I suppose they figured that she should have been happy just working with the them.)
But no, she insisted, pay me up front, or I walk. So they paid her and the rest is musical history.
Don't know if the story is true, but it would seem to fit. Legend also has it that Merry (who was heavily pregnant at the time of recording and ) so furiously recorded this song that she suffered a miscarriage literally from overstressing herself to belt out the vocals.