IRA is the three letter solution to the crossword term LEVIN OR GERSHWIN. Ira Gershwin was an American lyricist who collaborated with his brother George Gershwin on many popular songs. He was born in New York City in 1896 and died in 1983. Ira Levin was an American novelist, playwright, and songwriter. He was born in 1929 and died in 2007. He is best known for his novels Rosemary's Baby and The Stepford Wives.