Romberg's adaptation of melodies by Franz Schubert for Lilac Time (1921) and started him on the path to greatness. He subsequently wrote his best-known operettas, The Student Prince (1924), The Desert Song (1926) and The New Moon (1928), which were in a style similar to the Viennese operettas of Franz Lehar. He also wrote Rosalie (1928) together with George Gershwin. His later works, such as Up in Central Park (1945), are closer to the American musical in style, but they were less successful. Deep In My Heart, Dear; Drinking Song; Faithfully Yours; French Military Marching Song; Golden Days; I Bring A Love Song; Just We Two; Lover, Come Back To Me; Marianne; One Alone; One Flower Grows Alone In Your Garden; One Kiss; Road To Paradise; Romance; Serenade; Silver Moon ; Softly, As In A Morning Sunrise; Song Of Love; Stout Hearted Men; Student's Marching Song; The Desert Song; The Girl On The Prow; The Riff Song; Wanting You; When Hearts Are Young; When I Grow Too Old Dream; Will You Remember; You Will Remember Vienna; Your Land And My Land.