Ira Gershwin and his brother, George Gershwin, were two of the most influential American composers of the 20th century. Ira Gershwin wrote the lyrics to many of George's songs, including 'Rhapsody in Blue' and 'Porgy and Bess'. The crossword solution LEVIN AND GERSHWIN refers to Ira Gershwin and his brother, George Gershwin. Together, they created some of the most iconic American music of the 20th century.