The question was musical legends, so I guess it's not confined to folk music. Musicians I know or knew pretty well: Eddy Arnold, Billy Edd Wheeler, John Gary, Henry Mancini, Andre Segovia, Richard Tucker, Jack Benny (ok perhaps he wasn't best known as a musician), Roger Wagner, Alfred Wallenstein, Van Cliburn, Morton Gould, Eileen Farrell, Isaac Stern, Jose Iturbi, Rise` Stevens.

DougR