What's Up? is a musical notable as the first Broadway stage collaboration by Lerner and Loewe, with book by Arthur Pierson and Alan Jay Lerner, lyrics by Lerner, and music by Frederick Loewe.
William Tabbert was an American actor and singer primarily remembered as Lieutenant Joseph Cable in the original Broadway production of Rodgers and Hammerstein's musical South Pacific, where he introduced the songs "Younger Than Springtime" and "You've Got to Be Carefully Taught".
From top: Juanita Hall as Bloody Mary singing "Happy Talk", Betta St. John as Liat, and William Tabbert as Lt. Cable in the original Broadway cast of South Pacific (1950)