in C major. Beethoven then focused this version for the performances of 1806, creating "Leonore No. 3", also in C major. The latter is considered by many listeners as the greatest of the four overtures, but as an intensely dramatic, full-scale symphonic movement it had the effect of overwhelming the (rather light) initial scenes of the opera. Beethoven accordingly experimented with cutting it back somewhat, for a planned 1808 performance in Prague; this is believed to be the version now called "Leonore No. 1". Finally, for the 1814 revival Beethoven began anew, and with fresh musical material wrote what is now known as the Fidelio overture, in E major. As this somewhat lighter overture seems to work best of the four as a start to the opera, Beethoven's final intentions are generally respected in contemporary productions. While some believe that Gustav Mahler introduced the practice of performing "Leonore No. 3" between the two scenes of the second act, something which was common until the middle of the twentieth century, David Cairns states that it goes back to the middle of the 19th century and was therefore prior to Mahler. In this location, it acts as a kind of musical reprise of the rescue scene that has just taken place. Roles Synopsis Two years prior to the opening scene, the Spanish nobleman Florestan has exposed or attempted to expose certain crimes of a rival nobleman, Pizarro. In revenge, Pizarro has secretly imprisoned Florestan in the prison over which he is governor. Simultaneously, Pizarro has spread false rumors about Florestan's death. The warden of the prison, Rocco, has a daughter, Marzelline, and an assistant, Jaquino, who is in love with Marzelline. The faithful wife of Florestan, Leonore, suspects that her husband is still alive. Disguised as a boy, under the alias "Fidelio", she gains employment working for Rocco. As the boy Fidelio, she earns the favor of her employer, Rocco, and also the affections of his daughter Marzelline, much to Jaquino's chagrin. On orders, Rocco has been giving the imprisoned Florestan diminishing rations until he is nearly starved to death. Place: A Spanish state prison, a few miles from Seville Time: Late 18th century Act 1 Jaquino and Marzelline are alone in Rocco's house. Jaquino asks Marzelline when she will agree to marry him, but she says that she will never marry him now that she has fallen in love with Fidelio,