Fidelio passes from Nick to Bill as useful information. Its coincidence with the title of Beethoven’s opera allows for a comparison of disguise and rescue, as long as that reading does not replace what the film shows.
A word passed along out of context
Nick gives Bill a word he can use to gain access to the gathering. The information comes from someone who works there, not from a host inviting the doctor. That distinction explains how fragile the arrangement is. A password can be passed along without changing the recipient’s position: Bill knows what to say, but that does not make him Nick’s equal or give him a relationship with the people organizing the gathering.
At the entrance, Fidelio works. The film shows a specific correspondence between the spoken word and the continuation of access. We do not need to know its history within the group to recognize that effect. The mistake would be to automatically extend the result: a condition sufficient to get past the first barrier does not guarantee that every subsequent question can be answered in the same way. What is useful at one point may stop being useful a few yards later.
During the interrogation, the same word comes up again and is presented as insufficient. The demand for another password shifts the ground on which Bill thought he could respond. He no longer controls what counts as proof of belonging. Later, Ziegler claims that the second password did not exist. That explanation should remain attributed to him: it is what a character says afterward, while the interrogation scene shows the effectiveness of demanding something the visitor cannot provide.
The arrival at Somerton lets us follow the entire process of the checkpoints. Isolated within that process, Fidelio offers a particularly clear example of how language works: its value depends on who accepts it and under what circumstances. It is not a quality the protagonist retains once he has learned the word. The authority that makes a word effective can limit its reach without asking permission from the person who trusted it.
What happens in Beethoven’s libretto
Fidelio is also the name Leonore assumes in Beethoven’s opera. In the 1814 version of the libretto, Leonore disguises herself and enters the service of the jailer Rocco to search for her husband, Florestan. The text of Act II lets us make the comparison more precise: she steps between Pizarro and the prisoner when Pizarro tries to kill him, reveals her identity, and threatens her attacker. The arrival of an outside authority halts the violence and leads to the prisoner’s release.
The libretto therefore offers a verifiable combination of concealed identity, access to a restricted place, and protection of another person. These elements justify proposing a comparison with the film. However, a coincidence of names does not prove that each character in one work has a fixed counterpart in the other. The reference raises questions; by itself, it does not provide a cast of corresponding identities or a confirmed explanation of Kubrick’s intentions.
The motif of disguise offers one initial point of difference. Leonore uses it to find someone with whom she has a bond known to the audience. Bill enters out of curiosity and because of a crisis whose terms he has not explained to the people he encounters. Both actions involve concealing one’s identity, but their purposes are not interchangeable. Equating the characters simply because both enter in disguise would erase what makes each one’s actions distinct.
The woman who protects Bill offers a second point of comparison. In the libretto, the rescue is ultimately tied to a revealed identity and a recognized marital relationship. At Somerton, the intervention does not reveal who the woman is in the same way or let us know directly what will happen to her. This contrast is more precise than claiming the two are equivalent: one work makes public the bond that explains the rescue, while the other leaves the protagonist trying to figure it out.
Fidelity can enter this reading as a question, not an answer. The opera allows us to associate the name with a marital commitment that drives Leonore’s actions. In Eyes Wide Shut, Bill spends a night shaped by desire, secrets, and doubts about his relationship with Alice. That difference allows us to consider the word as an ironic or problematic reference. Neither possibility requires claiming that Alice is physically in the house or that the rescuer is her literal double.
What the reference does not prove
The opera cannot fill in the film’s omissions as if it were a document of the events at Somerton. It does not give a second password, identify the attendees, or prove what happens to the woman. The comparison is a critical operation between two works, not an internal source of information for Bill. Keeping that distinction leaves room for a suggestive reading without turning it into an investigation based on evidence the film never provides.
The verbal mention of Fidelio should not be confused with a claim about the music heard during the ritual. Naming a work in dialogue and using its score are different choices. The title’s presence allows us to discuss cultural associations, but it does not justify attributing Somerton’s soundtrack to Beethoven. Separating the word from the music keeps an identifiable reference from bringing along other unverified equivalences.
The adaptation of Dream Story also raises a different question: how a narrative source changes when it becomes a film. A reading of the password through Beethoven can coexist with that study, but it does not replace it. Finding a useful parallel does not make the opera the only text that shapes the story, or a better explanation than the relationships the film establishes on its own.
Fidelio thus retains two functions that can be analyzed separately. Within the action, it is a word that facilitates access and later proves insufficient. For a viewer who recognizes the operatic title, it introduces associations of disguise, fidelity, and rescue. The first function is represented in Bill’s exchanges; the second requires an argument by comparison. The reference becomes more interesting when one function is not used to erase the limits of the other.
References: Stanley Kubrick, Eyes Wide Shut (1999), original English-language version. Ludwig van Beethoven, Fidelio, 1814 version, libretto by Joseph Sonnleithner, with revisions by Stephan von Breuning and Georg Friedrich Treitschke; Act II, text at LibrettoArchive. Metropolitan Opera, “The Opera’s Plot & Creation: Fidelio.”