Andrew Armstrong, founder and artistic director of New Canaan Chamber Music, will speak to the New Canaan Men’s Club Friday, April 17, previewing that evening’s highly-anticipated concert, “Clarinet Meets Classical Accordion!” and describing the chamber organization’s growth in its five years of presenting outstanding, internationally known musicians in a series of concerts. Recognizing the widespread interest in Armstrong’s musical presentations, the Men’s Club is opening this meeting to spouses and significant others. The meeting, in Morrill Hall at St. Mark’s…