The virtuoso Hungarian composer and pianist Franz Liszt eloped to Switzerland with Marie d'Agoult, a married French countess and author, causing a massive scandal in European high society. Abandoning her family, d'Agoult lived with Liszt in Geneva and Italy, giving birth to three children, including Cosima Wagner, while hosting progressive intellectual salons. This passionate, volatile union occurred at the height of 'Lisztomania', an era of unprecedented public hysteria surrounding musical celebrity.

Marie d'Agoult published successful romantic novels and cultural essays under the pen name Daniel Stern, enriching the period's literary discourse. Their bohemian elopement came to epitomize the uninhibited, rebellious ethos of European Romanticism, directly inspiring contemporary poets like Heinrich Heine to write verses exploring the wild intersection of art, celebrity, and forbidden love.