Best known for her provocative songwriting, sharp humor and musical family, Martha Wainwright has just wrapped up an international tour in support of her live recording of Edith Piaf songs. The past year has been filled with ups and downs for Wainwright, including the loss of her mother, renowned singer-songwriter Kate McGarrigle, and the birth of her son. She joins us to look back at the year -- and to perform live in the studio.