The list was compiled by the U.K. classical-music station Classic FM based on estimates of each composer's lifetime earnings. The stories behind each composer's fortune will be spelled out in a new radio series called "Composers' Notes," beginning on September 4.
After Gershwin, who made multiple millions of dollars on his musicals, the highest-earning composers were Johann Strauss II, Verdi, Rossini, Handel, Haydn, Rachmaninoff, Puccini, Paganini, and Tchaikovsky.
The composers made their fortunes through fees for public appearances, lessons, and commissions.
Mozart, the Guardian notes, is not on the list; the composer died penniless at age 35.