The trio are employed as handymen in a recording studio at the fictional radio station KGBY. Larry and Curly battle back and forth as they unhook a pipe to connect it to a radiator. Moe gets mad at the two of them, only to slip and fall down. While not doing their work, the trio watches a recording session through a window as Alice Van Doren sings "Voices of Spring". She is recording this song under a pseudonym to audition for a radio show, an endeavor to which her father objects. After she finishes her song, the Stooges' boss comes into the room and sees them not working. He orders them to finish the job. Outside in the hallway, Larry and Curly accidentally hit Moe with two long pieces of pipe, leading to an argument. Their boss intervenes and as he's yelling at them, he's accidentally struck with the same pipes. The Stooges flee into an adjoining recording room with their boss on their heels. The room is occupied by a bad-tempered Italian baritone singer/violinist and piano player in a session. During the battle with their boss, they end up destroying the singer's glasses and violin. They defeat their boss only to have the irate singer attack them, forcing them to run again into another room. Inside the room, which served as the recording room for Alice, they pretend to be recording a ridiculous soap commercial, before finding Alice's record. Impressed by the operatic virtuosity of this stunningly beautiful soprano Curly lip syncs, as the other stooges adorn him as a woman. Moe pretends to be playing a flute while Larry is "playing" the piano. Curly is "heard" by the radio host Mrs. Bixby. Moe dubs Curly "Señorita Cucaracha," and the trio are hired to sing professionally on the radio, but must also appear at the home of the radio show's sponsor for a party. The Stooges arrive at Mrs. Bixby's home and discover that the Italian baritone is also present. They proceed to sabotage his singing of "Vieni Sul Mar" by flipping cherries into his mouth, until he chokes on one and has to be slapped on the back. The team then has a brief quarrel prior to performing, resulting in Moe breaking the record over Curly's head. Ironically the quarrel was over protecting the demo record. Larry then eyes a collection of records, hastily selects the "Lucia Sextet," and announces it as the "Six steps from Lucy". This song, however, requires pantomime by all three. This works well until the baritone recognizes them and unplugs the phonograph midway through the "Lucia Sextet", leaving the trio groaning out loud. They claim that Curly's voice is gone. Alice Van Doren is also present at the party, and catches onto the boys' scheme. She aids them by singing "Voices of Spring" from behind a curtain, with Larry playing the piano, and Moe playing the flute off key, as Curly once again mimes the lyrics, so her father would properly judge her performance without knowing it was his daughter singing. The Italian baritone is perplexed at Curly's ability and reacts by tossing a banana into Curly's mouth, revealing the trio as phonies. He pulls back the curtain hiding the real singer, and removes Curly's wig. Alice's father, however, sees that his daughter has genuine talent, and decides she should indeed pursue her singing career. As for the Stooges, they are pelted with records and fruits by the guests as they make a quick exit from the party.
Production notes
Micro-Phonies was filmed on June 4–7, 1945, several months after Curly Howard suffered a mild stroke. His performances were marred by slurred speech and slower timing. Though Micro-Phonies was the first film released that was directed by novice director Edward Bernds, it was not his first attempt. Understandably, Bernds was excited at his big chance to direct, but was shocked when he saw how ill Curly had become. Years later, Bernds discussed his trying experience during the filming of A Bird in the Head: Bernds feared that his directing days would be over as soon as they began if A Bird in the Head was released as his first effort. Producer Hugh McCollum acted quickly, and reshuffled the release order of the films Bernds had directed. As a result, the superior Micro-Phonies was released first, securing Bernds' directing position. Bernds would forever be indebted to McCollum for this act of kindness; henceforth, McCollum produced all of Bernds' Stooge films. Bernds later recalled how Curly's condition was inconsistent: Footage was reused in the 1960 compilation feature filmStop! Look! and Laugh!
