"Du gamla, du fria" ( [dʉː ˈɡâmːla dʉː ˈfrîːa] ; 'Thou ancient, thou free'), originally titled "Sång till Norden" ('Song to the North'), is the Swedish title and incipit of a 19th-century patriotic song which serves as the "de facto" national anthem of Sweden – it is therefore unofficial. The lyrics (words) were written by Swedish jurist and antiquarian Richard Dybeck in 1844, and its melody is based on a traditional folk tune which was later rearranged by Swedish composer and librarian Edvin Kallstenius nearly a century later.