Classical music: Pushing chamber music boundaries

Quartetti: A Festival of String Quartets
When: October 18-20, 8 p.m.
Where: The Annex
Tickets and info:  from $12, newmusic.org
The Jerusalem Quartet
with Pinchas Zukerman and Amanda Forsyth
When: Oct 14, 3 p.m.
Where: The Chan
Tickets and info: from $25, vanrecital.comVancouver’s regular cornucopia of chamber music is a remarkable part of our classical scene, but this October we’ve got some special events that demonstrate both the significance and diversity of today’s cha