At this point, Harburg and Ira Gershwin agreed that "Yip" should start writing song lyrics.
Gershwin introduced Harburg to Jay Gorney, who collaborated with him on songs for an Earl Carroll Broadway review (Earl Carroll's Sketchbook): the show was successful and Harburg was engaged as lyricist for a series of successful revues, including Americana in 1932, for which he wrote the lyrics of "Brother, Can You Spare a Dime?
He wrote the lyrics to the standards "Brother, Can You Spare a Dime?
Although never a member of the Communist Party Harburg was named in a pamphlet "Red Channels: The Report of Communist Influence in Radio and Television;" his involvement with the Hollywood Democratic Committee, and his refusal to identify reputed communists, led to him being blocked from working in Hollywood films, television, and radio for twelve full years, from 1950 "As the writer of the lyric of the song ‘God’s Country,’ I am outraged by the suggestion that somehow I am connected with, believe in, or am sympathetic with Communist or totalitarian philosophy," he wrote to the House Un-American Activities Committee in 1950.
but it closed after forty performances at the Broadhurst Theatre on Broadway.
The song was released as a single in 1967, and reached #37 on the Billboard Easy Listening chart.
It was also nominated for the Grammy Award for Best Folk Recording.
Harburg and Gorney were offered a contract with Paramount: in Hollywood, Harburg worked with composers Harold Arlen, Vernon Duke, Jerome Kern, Jule Styne, and Burton Lane, and later wrote the lyrics for The Wizard of Oz, one of the earliest known "integrated musicals," for which he won the Academy Award for Best Music, Original Song for "Over the Rainbow." Of his work on The Wizard of Oz, his son (and biographer) Ernie Harburg has said: So anyhow, Yip also wrote all the dialogue in that time and the setup to the songs and he also wrote the part where they give out the heart, the brains and the nerve, because he was the final script editor. In the 1940s, he wrote a series of "book" musicals with social messages, including the successful Bloomer Girl (1944), set during the Civil War, which was about temperance and women's rights activist Amelia Bloomer.