Blooper 1: During the rehearsal scene in the apartment, someone in the studio audience snaps a picture and the camera flash shinned on the stage.
Blooper 2: When Lucy is unpacking, and putting magazines in a barrel, one of the magazines has a picture of her and Dezi Arnaz on the cover. It's on the coffee table.
In the opening scene, Fred, Lucy, Ricky and Ethel are singing "I Want a Girl Just Like the Girl That Married Dear Old Dad". Fred, Lucy and Ethel are singing in one key, but bandleader and famous singer Ricky is singing in a different key!
The audio portion of this episode was used as a pilot for an unsold radio version of "I Love Lucy". A recording of the broadcast still survives to this day, and features Desi as Ricky providing narration for the introduction of the story, as well as describing visual actions within it.
The scene with Lucy and Ricky figthing over having the window open while they sleep comes from one of the real life disagreements between Lucille Ball, who liked the window open and Desi Arnaz, who preferred the window closed.
This is the first fight between the Ricardos and the Mertzes.
If Lucy and Ricky were making all that noise on purpose, and eventually having Ricky's orchestra rehearse at the apartment in the middle of the night, wouldn't all the other tenants complain?
When the Mertzes leave the Ricardo's apartment in the first scene, Ethel turns left in the hallway to go to her apartment and Fred turns right as the door closes.
In the final scene of the episode there is a magazine on the coffee table. The magazine has Lucille Ball and Desi Arnaz on the front cover.
During the song scenes in the Ricardo's apartment at the end of the episode, you can see a flash during a number. That is from a audience member's camera.
Lucy: The more the noisier.
Lucy: Ricky, why don't you have the rehearsal here?
Ricky: Honey, are you crazy? I've got a 16 piece band. We'll blow the roof off the joint.
Lucy: Well, it doesn't look like rain.
Ricky: I'll do it.
Ethel: (talking about her rings) Don't bother. I'll get them, if they're still there.
Lucy: I don't know why you should worry. You can always buy another box of Cracker Jacks.
Lucy: (about Ethel) She must've walked downstairs too fast and gotten the bends.
Ricky: We're not making noise, we're making music.
The slogan "Nertz To Mertz" used in this episode would be used again later in episode 47, "The Club Election".
Guest Barbara Pepper and Lucille Ball were old pals from their younger days when they were both part of a troupe known as "The Goldwyn Girls".
Songs: "Sweet Sue," "El Cumbanchero," "La Raspa," "Mexican Hat Dance" (called "El Breako the Leaseo" by Lucy)
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