 OregonLive.com | Portland Opera opens season Saturday with street fair, concert a nd more OregonLive.com By David Stabler, The Oregonian View full sizeBrent Wojahn/The OregonianRichard Troxell, playing Afredo, with Maria Kanyova (CQ), playing Violetta, in the opera La Traviata at the Keller Auditorium. Portland Opera takes a new approach to its 47th ... REMINDER: Portland Opera Opens 47th Season with “Big Night†|