If the blue box is "personal" to Betty/Rita, the Club Silencio is the box writ LARGE, it's for all of us. It's open to the public and we, humankind, are the public whether we know it or not. In it, the Magician/MC, Lynch's alter-ego, is explaining to us how it's done and what's going on but at the same time keeping the trick up, almost as to prove how our eyes can be so continuously fooled by what is happening in other dimensions we cannot see or understand. And the artist is the Magician who straddles the dimensions and knows how to use beauty to fool the human eye. When we erroneously assume the Magician's act is over, Rebekah Del Rio's rendition of her Llorando is indeed one of the surprisingly beautiful and intense moments in the film just before... So in film, so in life, we are fooled. Note, the French expression for nightclub is "Boite de Nuit" - Box of night. (brazilnutfox)
When we see
Club Silencio at the very end, it starts out drenched in blue light. Some
think this, by itself, makes the theater a blue box akin to the other one (and
possibly other blue boxes- there are a couple blue
vans, there is Diane's entire apartment, there
is a blue box in Diane's nightstand, next to her
gun, plus there is a blue
box phone in the pilot.) - (dropkick23)
Silencio is the club of the knowledge of good and evil, the place where life's curtain is pulled back to reveal the movie's core horror: No hay banda. Club Silencio is a paradox, a surreal entertainment, a self-consciously un-live cabaret that trumpets its artificiality. It's a Milli Vanilli fanclub - surreal, unreal, yet evocative.
Clue #7: What is felt and realized in Club Silencio? - (BriteLite)
Club Silencio - Entrance to afterlife
The club Silencio is more of an entrance into another dimension (afterlife) and within the Club, the stage performers echo through Diane's consciousness that she is no longer alive. They perform, suggesting everything is an act, that nothing is real. The singer performs, but during the performance, she falls to the floor but she is still heard singing, suggesting that the body dies but the spirit still lives on! The club Silencio is considered a form of non-reality (like a realisation on death itself) the empty stage with the microphone in the centre representing the "light"! Furthermore, considering that Silencio is Spanish for "Silence" suggests the representation that this location is a symbolisation for the silence of death! - (imagineuk)
Related: Dying Moment / Afterlife theory
If you notice to the right hand side of the screen when Betty and Rita are outside at 2 in the morning trying to get a taxi, there is a pole/street light that has a sign that says "HELL". That sure makes it clear what Silencio Club is all about.. and I saw that after I read a lot of comments about Silencio being symbolic of death/the Master of Illusion being the devil. Note: The entire message reads: Hollywood is Hell!
Related: The Magician = the Devil?
Club Silencio - The dream version of Adam's dinner party?
Club Silencio - A reminder of Diane's sexual abuse
MD is about Diane, who was sexually abused as a child by her grandmothers male companion. Her grandmother was aware of the abuse but remained silent as did Diane. The name of the club "Silencio" refers to the silence of Diane's grandmother regarding the abuse. The Magician represents the abuser and the blue haired Lady Diane's grandmother. The Magician says in various languages that there is no band, there is no orchestra, it is all an illusion. This is him telling, and Diane realizing that the jitterbug contest isn't real, it is just an escape. Once the Magician establishes this, with the grandmother watching in silence, he says "listen" and raises his arms causing thunder claps (similar to the raised arms and thunderclaps that drove Diane to suicide). If you listen closely, you will hear feminine gasps, the sound of sex and a male grunting. If you watch, at the same time you will see terror in Betty/Diane's face, her body shaking, but not in a normal trembling fashion, but kind of an up and down movement. The Magicians face shakes along with her, and the sights and sounds end with a thrust from the Magician and the grunting male sound. The Magician gets a devilish evil look on his face, as the blue haired Lady still looks on in silence, and he then disappears. - (richdubbya)
Related: Sexual Abuse
When I first saw Mulholland Drive in the theaters, when the Club Silencio scene came up, I would think to myself that for sure I saw Sheryl Lee sitting in the audience of the scene. Each and every time, I saw the movie, I was sure that it was her. However, she was nowhere on the cast list, nor did Universals publicity make any mention of this. I dropped it after a while, however, knowing the DVD was going to be released soon, I asked Lynch in his chat room. Here is his response:
dugpa_: In the Club Silencio Scene sitting in the theater, on the left side of the screen there is a lady that looks a lot like Sheryl Lee. Was that just my imagination?
DAVIDLYNCH: YOUR IMAGINATION DUGPA
However after seeing the DVD, I can’t help but wonder if this isn’t Sheryl Lee, then it has to be her twin sister. I mean what are the chances…
Link: Sheryl Lee among the audience? - (dugpa)
The principle reason for the thunder and lightning comes from its association with the 16th Tarot card: the Tower. The thunder and lightning scene at the Club Silencio is related to the thunder and lightning just before Diane kills herself, so it's natural to imply a fatal effect.
It is also connected to Fred Madison's obsession with his impending electrocution in Lost Highway: there's a lot of electrocution-related imagery in that movie. A more obscure connection is with the electrocution of the trespassing replicant in Blade Runner, a movie that also uses the Tower card symbolism and that also associates the electrocution with a lightning strike. (Blade Runner was directed by Ridley Scott, who preceded Lynch as the director of Dune, and has a number of Mulholland Drive elements.) - (jro)
Related Theory: Electro-shock Therapy
Without reference in the screenplay, the surrealistic Silencio sequence was shot in late 1999 as a finale to the original TV-Pilot. The idea around Club Silencio is a results of a deal between Disney's Touchstone Television and David Lynch. The company contributed $2.5 million more to the Pilot project (to a total budget of $7 million) with the proviso – which Lynch grudgingly accepted – that he shoot extra footage to be used as a "Closed ending." Disney's Buena Vista International intended to recoup the company's money by releasing the longer version as a film in Europe.