Twenty-disc set includes "The Jazz Singer" (1927), "The Broadway Melody," "42nd Street," "The Great Ziegfeld," "The Wizard of Oz" (1939), "Yankee Doodle Dandy," "An American in Paris," "Show Boat" (1951), "Singin' in the Rain," "Seven Brides for Seven Brothers," "A Star Is Born" (1954), "The Music Man" (1962), "Viva Las Vegas," "Camelot" (1967), "Willy Wonka & the Chocolate Factory," "Cabaret," "That's Entertainment!," "Victor/Victoria" (1982), "Little Shop of Horrors" (1986), and "Hairspray" (1988).