Earlier this year, Nonesuch Records released Tell My Sister, a three-disc set comprising newly remastered editions of Kate & Anna McGarrigle's beloved 1976 self-titled debut and its equally praised 1977 follow-up, Dancer with Bruised Knees, plus a third disc of previously unreleased songs and demos. Uncut recently named it one of the best reissues of the year, calling it the "foundations of one of music’s most enduring dynasties." In 2005, Nonesuch released The McGarrigle Christmas Hour, in which the sisters, their family—including Rufus Wainwright and Martha Wainwright—and honorary family members, like Emmylou Harris, celebrated the holidays in song.

The family tradition of holiday music-making continues with two concerts in the coming week titled A Not So Silent Night: at the Théâtre St-Denis in the McGarrigles' hometown of Montreal this Sunday and at The Town Hall in New York City on Thursday, December 15. Making the holiday merriment all the more special, the concerts are a tribute to the late Kate McGarrigle, who died of sarcoma last year, with all proceeds from both concerts going to benefit the Kate McGarrigle Sarcoma Research Fund, via the McGill University Health Centre Foundation (MUHC) in Canada and the Sarcoma Foundation of America (SFA), respectively.

Leading the charge on stage this year are Kate's children, Rufus and Martha, and Kate's sister Anna, supported by The Kate McGarrigle Tribute Band. In Montreal, they'll be joined by special guests Robert Charlebois, Monique Mercure, Chloé Sainte-Marie, Michèle Mercure, and Lucy Wainwright Roche. For the New York show, they'll be joined by still more family and longtime friends like Lou Reed, Laurie Anderson, Loudon Wainwright III, Sloan Wainwright, Teddy Thompson, Jenni Muldaur, and Joan Wasser.

Anna and Martha spoke with Hour Community in Montreal about the concert and about continuing this tradition, which Kate was instrumental in creating, without her. "I don’t know what it’s going to feel like," Anna tells the magazine. "The thing is, even though [Kate is] not there, she’s reconstituted in Rufus and Martha." Read the touching interview at hour.ca.

For more information on tickets and special VIP packages for the two shows, go to rufuswainwright.com.

To pick up copies of Tell My Sister and The McGarrigle Christmas Hour, head to the Nonesuch Store, where both CDs are 34% off SRP as part of the store's fourth-anniversary sale and include high-quality, 320 kbps MP3s at checkout.