Janet Coster [SEP] voice type
Janet Coster
Janet Coster is an English operatic mezzo-soprano.
Born in London, the daughter of a London Transport employee, Coster studied at the Guildhall School of Music and privately with Eva Turner. In the 1960s she undertook a number of roles at Covent Garden including the boy in the 1966 production of Modest Mussorgsky's "Boris Godunov" with Boris Christoff in the title role.
In 1969 Coster joined the roster of principal artists at the Cologne Opera, making her debut there as Vitellia in a new production
that the basic idea of the movable type came to Gutenberg from Laurens Janszoon Coster via Fust, who was apprenticed to Coster in the 1430s and may have brought some of his equipment from Haarlem to Mainz. While Coster appears to have experimented with moulds and castable metal type, there is no evidence that he had actually printed anything with this technology. He was an inventor and a goldsmith. However, there is one indirect supporter of the claim that Coster might be the inventor. The author of the Cologne Chronicle of 1499 quotes