Performing and recording, she transformed what was seen as a marginal genre in the music industry into a celebration of shared humanity. Ella Jenkins, a self-taught musician who defied her industry’s norms by recording and performing solely for children, and in doing so transformed a marginal and moralistic genre into a celebration of a diverse yet common humanity with songs like “You’ll Sing a Song and I’ll Sing a Song,” died on Saturday in Chicago. She was 100. Her death was confirmed by John Smith, associate director at Smithsonian Folkways Recordings.Ms. Jenkins had no formal musical training, but she had an innate sense of rhythm. “I was always humming or singing and la-la, lu-lu or something,” she once said.She absorbed the everyday melodies of her childhood — the playground clapping games, the high school sports chants, the calls of a sidewalk watermelon vendor hawking his produce. As an adult, she paired such singsong rhythms with original compositions and sought not simply to amuse or distract children but to teach them to respect themselves and others.Against the sound of a kazoo, a harmonica, a variety of hand drums or, later, a baritone ukulele, Ms. Jenkins sang subtly instructive lyrics, as in “A Neighborhood Is a Friendly Place,” a song she wrote in 1976:You can say hiTo friends passing byA neighborhood is a friendly place.You can say helloTo people that you knowA neighborhood is a friendly place.Neighbors to learn to shareNeighbors learn to careA neighborhood is a friendly place.Over children’s steady clapping, she recorded the age-old “A Sailor Went to Sea”:A sailor went to sea, sea, seaTo see what he could see, see, seeAnd all that he could see, see, seeWas down in the bottom of the sea, sea, sea.For many parents and classroom teachers, Ms. Jenkins’s renditions of traditional nursery rhymes like “Miss Mary Mack” and “The Muffin Man” are authoritative.Still, from the beginning of her career in the 1950s, Ms. Jenkins pronounced her signature to be call-and-response, in which she asked her charges to participate directly in the music-making, granting them an equal responsibility in a song’s success. She had seen Cab Calloway employ the technique in “Hi-De-Ho,” and for her, the animating idea, veiled in a playful to-and-fro, was that everything good in the world was born of collaboration.In one of her most popular recordings, Ms. Jenkins sings out, “Did you feed my cow?” “Yes, ma’am!” a group of children trumpet back. The song continues:Could you tell me how?Yes, ma’am!What did you feed her?Corn and hay!What did you feed her?Corn and hay!As Ms. Jenkins repopularized time-honored children’s songs, she also gave the genre global scope. Before Ms. Jenkins, children’s music in the United States consisted primarily of simplified, often cartoonish renditions of classical music.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More