Jerome David Kern (January 27, 1885 – November 11, 1945) was an American composer of musical theatre and popular music. One of the most important American theatre composers of the early 20th century, he wrote more than 700 songs, used in over 100 stage works, including such classics as "Ol' Man River", "Can't Help Lovin' Dat Man", "A Fine Romance", "Smoke Gets in Your Eyes", "All the Things You Are", "The Way You Look Tonight", "Long Ago (and Far Away)" and "Who?". He collaborated with many of the leading librettists and lyricists of his era, including George Grossmith Jr., Guy Bolton, P. G. Wodehouse, Otto Harbach, Oscar Hammerstein II, Dorothy Fields, Johnny Mercer, Ira Gershwin and E. Y. Harburg.