Simplify the following text for a Grade 15 native English-speaking person.
Original: Firstly , he reorganized the companyâ s operations and established links with many of the world 's great opera houses , including the Royal Opera House , Covent Garden , the Metropolitan Opera , the OpÃ ra Bastille , La Scala , La Fenice , the Tel Aviv Opera , the Washington National Opera and the San Francisco Opera .
Simplified: It has now got links with many of the world 's great opera houses , including the Royal Opera House , Covent Garden , the Metropolitan Opera , the OpÃ ra Bastille , La Scala , La Fenice , the Tel Aviv Opera , the Washington National Opera and the San Francisco Opera .