Birgit Nordin and the high F
I read a casual comment on youtube stating that Birgit Nordin was unable to sing the high F's required by the role, and that those were instead supplied by vocal pedagogue Ulla Blom. Is this true? Is there an official source?
The poster went on to say that Birgit Nordin was embarassed that she did not have the F's and was still trying to cover it up. I find that pretty amusing - the high F cover-up! :)