Overview: The Serendipity Singers: ""Crooked Little Man,"" ""He's Gone Away"" Johnny Cash: ""When Papa Played the Dobro,"" ""Understand Your Man"" Addis & Crofut: Unknown Mike Settle: Unknown Joan Toliver: ""Oh Mary, Where's Your Baby,"" ""High Flying Bird"" The Phoenix Singers: ""I'm The Man That Built the Bridges,"" ""Oh, Waly, Waly,"" ""Ol' Gator"" Wild Bill Davidson & His Salt City Six: Unknown Adam Keefe: Comedy impressions