Edgar Yipsel "Yip" Harburg (born Isidore Hochberg, Yiddish: איסידור הוכברג?; April 8, 1896 – March 5, 1981) was an American popular song lyricist who worked with many well-known composers. He wrote the lyrics to the standards "Brother, Can You Spare a Dime?," "April in Paris," and "It's Only a Paper Moon," as well as all of the songs in The Wizard of Oz, including "Over the Rainbow." He was known for the social commentary of his lyrics, as well as his liberal sensibilities. He championed racial and gender equality and union politics. He also was an ardent critic of religion.