Original: He made his Metropolitan Opera (Met) debut on December 17, 2004 conducting KÃ Å a KabanovÃ, with Karita Mattila in the title role.
Simplified: He first conducted at the Metropolitan Opera (Met) in December 2004, conducting LeoÅ JanÃ Ä ek's "KÃ t 'a KabanovÃ" with Karita Mattila in the title role.