Gedda is said to be the most widely recorded tenor in history.
Gedda's singing is best known for his beauty of tone, vocal control, and musical perception.
WIKIPEDIA
Nicolai Harry Gustav Gedda was born in Stockholm to a Swedish mother and a half-Russian father. Gedda was raised by his aunt Olga Gedda and his adoptive father Mihail Ustinov (a distant relative of Peter Ustinov), who sang bass in Serge Jaroff's Don Cossack Choir and was cantor in a Russian Orthodox church. Gedda grew up bilingual in Swedish and Russian. From 1929 to 1934 they lived in Leipzig, Germany, where young Nicolai learned German. They returned to Sweden after Hitler came to power. In school he later learned English, French and Latin. After leaving school he learned Italian by himself.