Artist Data:
Wikipedia: https://en.wikipedia.org/wiki/List_of_operatic_contraltos
Artist Data: Kerstin Thorborg was born 1896-05-19. Kerstin Died: 1970-04-12….
Artist Data: Kathryn Meisle was born 1899-10-14. Kathryn Died: 1970-”…
Artist Data: Wikipedia: https://en.wikipedia.org/wiki/Anastasia_Robinson
Artist Data: Wikipedia: https://en.wikipedia.org/wiki/Claudia_Hellmann
Artist Data: Emma Albertazzi was born 1814-05-01. Emma Died: 1847-09-25….
Artist Data: Portia White was born 1911-06-24. Portia Died: 1968-02-13….