sentences: "Classic pop includes the song output of the Broadway, Tin Pan Alley, and Hollywood show tune writers from approximately World War I to the 1950s, such as Irving Berlin, Frederick Loewe, Victor Herbert, Harry Warren, Harold Arlen, Jerome Kern, George Gershwin and Ira Gershwin, Richard Rodgers and Lorenz Hart, Oscar Hammerstein, Johnny Mercer, Dorothy Fields, Hoagy Carmichael, Cole Porter and many others.The swing era made stars of many popular singers including the young Frank Sinatra, Dinah Shore, Jo Stafford, Perry Como, Peggy Lee, Patti Page, and David Whitfield.