In the quieter registers of a very public life, Lady Gaga and Michael Polansky have welcomed a daughter into the world — a moment they chose to share on their own terms, in their own time. The child's name, drawn from the world of music, reflects the artist's lifelong devotion to her craft, now carried forward into something more intimate than any stage. For a woman who has long spoken of her wish to become a mother, this arrival is not a headline so much as a threshold.