The Fifth Dimension's "Marilyn McCoo back-up," Florence Larue, may have nailed the greatest soprano/rock performance, ever, with "This is Your Life!" If you want proof, you can youtube this one for free. Produced in 1969, this song may still be the best, ever. Stupidly ignored by music execs upon its original release, "This is Your Life" is back for another shot at the front of the Cleveland trophy case. After that super-sonic vocal, I'm surprised Florence Larue is still in one piece. As far as... Sign in to see full entry.