The Montreal Chamber Music Festival began its 19th season Thursday with an invitation for the audience to “exchange” with the performers onstage. Why, then, was I not allowed to read my political poetry? But thank you to whoever let me back into the concert, which featured two beloved local stars, pianist André Laplante and soprano Karina Gauvin, and the Quebec première of the Dover Quartet, a rocket-powered American group that
swept the Banff International String Quartet Competition this year.