Geoffrey Chaucer's Prioress's Tale, one of the Canterbury Tales, gives Alma Redemptoris Mater its best known literary appearance outside the liturgy itself. The tale follows a young schoolboy who hears older students singing the antiphon and learns its opening words by rote, from a classmate, without understanding the Latin he is repeating, drawn simply by the melody's beauty and his devotion to Mary. He sings it on his way through the town's Jewish quarter, a detail reflecting the antisemitic blood libel convention common in medieval Marian legends of this type, and the tale turns on his death and the miraculous continuation of his singing afterward, framed by the storyteller as evidence of Mary's power to preserve devotion offered to her even by a child who cannot parse its words.
Whatever judgment a modern reader brings to the tale's antisemitic frame, which scholarship on Chaucer treats as a serious problem in the text rather than an incidental period detail, the boy's manner of learning the antiphon is treated by literary historians as broadly realistic testimony to how liturgical Latin actually circulated among medieval laypeople and schoolchildren: by ear, through repetition and imitation, often with no grasp of the words' literal meaning, carried by melody and communal repetition rather than by literacy. The tale's premise only works as a plausible fourteenth century scene because Alma Redemptoris Mater was, by Chaucer's day, common and recognisable enough to be something an uncomprehending child could plausibly pick up simply by listening.