This month’s release in the Naxos Canadian Classics series focuses on the string chamber music of Jacques Hétu (1938–2010). The theme of past and present links composer and performers, as Raymond Bisha surveys Hétu’s works dating from the 1960s (when the original Orford String Quartet was formed) to music written a few years before his death, coincidentally the time of the formation of the New Orford String Quartet, who perform here with distinguished guest players.