Shirley (Goodman) and (Leonard) Lee, the Sweethearts of the Blues, were born ten days apart in 1936. They recorded "Feels So Good" (Lee) in 1955.
Johnny Preston (Courville) was discovered by J.P. Richardson aka The Big Bopper. It was Johnny and his falsetto on "Feels So Fine" in 1960. Yes, it's the same song as Shirley and Lee's tune.