correspondence with her. Their friendship came to an abrupt end in 1811, owing to Bettina's behaviour with Goethe's wife. In 1811, Bettina married Achim von Arnim, the renowned Romantic poet and member of the notable Arnim family. The couple settled first at the Wiepersdorf castle, and then in Berlin. They had seven children. Achim died in 1831, but Bettina maintained an active public life. Her passion for Goethe revived, and in 1835, after lengthy discussions with the writer and landscape gardener Hermann von Pückler-Muskau, she published her book Goethe's Correspondence with a Child (), which purported to be a correspondence between herself and the poet. The book is in large part fictitious. Genuine sonnets of Goethe in it were addressed, not to her, but to Minna Herzlieb. As a work of fiction, the book has been praised. She continued to write, inspire, and publish until 20 January 1859, when she died in Berlin, aged 73, surrounded by her children. Her grave is in the Wiepersdorf churchyard. Career During the years of 1806 to 1808, von Arnim helped gather the folk songs that made up Des Knaben Wunderhorn, the collaborative work of her brother and her future husband, Achim von Arnim. Some of the songs were later put to music by a number of composers, among them Gustav Mahler. The collection became a touchstone of the Romantic musical and poetic style. From 1808 to 1809 she studied voice, composition, and piano in Munich under Peter von Winter and Sebastian Bopp. She published her first song under the pseudonym Beans Beor, which she occasionally used later as well. Bettina sang briefly in the Berliner Singakademie and composed settings of Hellenistic poems by Amalie von Helvig. Though domestic duties connected to her 1811 marriage to von Arnim diminished her productivity, several art songs from the period have been recovered and have been published in Werke und Briefe. Von Arnim was the first composer to set the poet Hölderlin's work to music. She was a muse to the progressives of Prussia, linked to the socialist movement and an advocate for the oppressed Jewish community. She published two politically dissident works but evaded chastisement because of her friendship with the King of Prussia. After the 1831 death of her husband, Bettina continued her dedication to the creative community. She published a collection of seven songs in public support of Prussian music director Gaspare Spontini, under