I’ve always liked “Your Woman” as a counter to the musicians in my life who say “Oh, I’ve got to have “X” (X being expensive thing de-jour) in order to make a good track of my song.”
OTOH, between then and now this thing called “pitch correction” has been made available to the masses, and while it is frequently overused, a good producer should know when to say to the engineer/mixer "hey you know that part of the vocal line where he sings. . . "