People, Oct. 9, 1978

Barroom baritone: slightly off key. Choice of material: boyhood favorites. Yet Old Showman Joe Papp, producer of the New York Shakespeare Festival, won raves from the audience attending his professional singing debut last week at a Manhattan cabaret called the Ballroom. "I'm making a public display of myself at this stage of my life," Papp, 57, began. Then he whipped out a top hat and cane and even mouthed a harmonica. After the finale and a flurry of roses at his feet, the star collapsed in his dressing room and sighed: "I could act...