Overview: The Brothers Four: ""Green Fields,"" ""The Ox-Driver's Song,"" ""Beautiful Brown Eyes,"" ""Beans Taste Fine"" Bob Gibson: ""Sweet Betsy From Pike,"" ""Fare Thee Well"" Enid Mosier & Alfonso: Unknown The Romeros (Flamenco Guitarists): Unknown The Ivy League Trio: Unknown Elaine Malbin: ""Black is the Color of My True Love's Hair"" Stan Rubin & His Tigertown Five: Unknown Charlie Manna: Stand-up comedy routine