Original sentence: He has appeared in many of world's well-known opera houses including the Metropolitan Opera, San Francisco Opera, Lyric Opera of Chicago, Houston Grand Opera, Seattle Opera, Dallas Opera, Opera Company of Philadelphia, Pittsburgh Opera, Mostly Mozart Festival, Royal Opera House (Covent Garden), Paris Opera, Bayerische Staatsoper, Glyndebourne Festival, and the Theatre Royal de la Monnaie in Brussels
Edited sentence: He has appeared in many of world's most pretentious opera houses including the Metropolitan Opera, San Francisco Opera, Lyric Opera of Chicago, Houston Grand Opera, Seattle Opera, Dallas Opera, Opera Company of Philadelphia, Pittsburgh Opera, Mostly Mozart Festival, Royal Opera House (Covent Garden), Paris Opera, Bayerische Staatsoper, Glyndebourne Festival, and the Theatre Royal de la Monnaie in Brussels