design Øystein Os Simonsen liner notes Per Dahl producer Pro Musica remastered by [digital remastering] David A. Contini soprano vocals Kirsten Flagstad supervised by [project supervisor] Tore Simonsen transferred by [analog transferring] David A. Contini Glass Mastered At DADC Austria Glass Mastered At DADC Austria Glass Mastered At DADC Austria Recording dates: Track 1-1: Buenos Aires, 13 August 1948 Track 1-2: San Francisco, 9 October 1949 Track 1-3 to 1-5: Milan, 9 March 1950 Track 1-6, 2-1: Milan, 2 April 1950 Track 2-2 to 2-5: London, 22 May 1950 Track 2-6 to 2-8: San Fransisco, 8 October 1950 Track 2-9: Los Angeles, 16 November 1951 Track 2-10: New York, 10 March 1951 Track 3-1: London, 2 December 1951 Track 3-2: Berlin, 9 May 1952 (or 5 November 1952) Track 3-3 to 3-7: London, 21 December 1952 Track 3-8: Copenhagen, 14 April 1957 Track 3-9 to 3-18: London, 7 September 1957