(Beethoven: Fidelio). Bar. Governor of the prison. He has secretly imprisoned his political enemy Florestan and is determined to kill him before the King's Minister arrives to inspect the gaol. He is foiled by Florestan's wife Leonore who, disguised as a young man, Fidelio, has come to work at the gaol. Aria (with chorus): Ha! Welch ein Augenblick! (‘Ha, what a moment!’). Created (1805) by (Friedrich) Sebastian Mayer.