Norwegian National Academy of Opera ended in 1996.
Washington National Opera was created in 1957.
National Opera of Ukraine was created in 1867.
Romanian National Opera was created in 1954.
Welsh National Opera was created in 1943.
Moldova National Opera Ballet was created in 1980.
Iaşi Romanian National Opera was created in 1956.
British National Opera Company was created in 1921.
Metropolitan Opera National Council Auditions was created in 1954.
Cluj-Napoca Romanian National Opera was created in 1906.
Kirsten Flagstad who made her Metropolitan Opera début as Sieglinde on 2nd February 1935.
Pacific Opera was created in 2003.