Backstage: Even After Cancer, the Show Goes On by Jane Horwitz
"It's an amazing story of luck," Jane Pesci-Townsend says of her incredible journey from February to now. The 45-year-old singer-actress has been a witty and lush vocal presence on stages from Signature Theatre to the Kennedy Center, where two years ago she went on for an ailing Christine Baranski in "Sweeney Todd" and wowed 'em.<br /> <font size="1" face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" color="#9c0031"…