Oslo being the first Opera House in the world to let people walk on the roof of the building. The foyer and the roof are also used for concerts as well as the three stages. Most great Norwegian authors have lived in Oslo for some period in their life. For instance, Nobel Prize-winning author Sigrid Undset grew up in Oslo, and described her life there in the autobiographical novel "Elleve år" (1934; translated as "The longest years"; New York 1971). The playwright Henrik Ibsen is probably the most famous Norwegian author. Ibsen wrote plays such as "Hedda Gabler", "Peer Gynt", "A
Peer Gynt and English). Reportedly, Grieg was not in the right mood for this task. The music of these suites, especially "Morning Mood" starting the first suite, "In the Hall of the Mountain King", and the string lament "Åse's Death" later reappeared in numerous arrangements, soundtracks, etc. Other Norwegian composers who have written theatrical music for "Peer Gynt" include Harald Sæverud (1947), Arne Nordheim (1969), Ketil Hvoslef (1993) and Jon Mostad (1993–4). Gunnar Sønstevold (1966) wrote music for a ballet version of "Peer Gynt". In 1906 scenes from the play were given by the Progressive Stage Society of New York. The first