Question: Who wrote and performed as a duo with her sister Anna McGarrigle, and wrote "Proserpina", the album's first single?

full_context: Document 1: Canadian folk music: Canadian folk music has a long history, dating from the 16th and 17th century, mostly derived from the music of early settlers; much earlier for the music of indigenous people. Folk music thus differentiates between traditional and contemporary. Many of Canada's most influential folk artists emerged in the contemporary folk music era, notably Bruce Cockburn, Buffy Sainte-Marie, Ferron, Gordon Lightfoot, Joni Mitchell, Kate & Anna McGarrigle, Leonard Cohen, Murray McLauchlan, Stan Rogers, Valdy, Penny Lang and Wade Hemsworth. In the 1970s, chansonniers grew steadily less popular with the encroachment of popular rock bands and other artists, and many of the folk clubs, such as the Montreal Folk Workshop, and groups such as The Raftsmen, the Mountain City Four and, eventually, The Travellers, that had served to foster the mid-20th century revival closed down. Some new performers did emerge, however, including Jacques Michel, Claude Dubois, and Robert Charlebois. The Canadian Folk Music Awards are presented annually to musicians carrying on in the tradition.
Document 2: Anna McGarrigle: Anna McGarrigle, CM (born December 4, 1944) is a Canadian folk music singer and songwriter who wrote and performed as a duo with her sister, Kate McGarrigle, until Kate's death in 2010.
Document 3: Martha Wainwright: Martha Wainwright (born May 8, 1976) is a Canadian-American folk-rock singer-songwriter. She is the daughter of American folk singer and actor Loudon Wainwright III and Canadian folk singer-songwriter Kate McGarrigle. She was raised in a musical family along with her older brother, Rufus Wainwright, in Montreal, Quebec, Canada.
Document 4: Home (Dixie Chicks album): Home is the sixth studio album by American country band Dixie Chicks, released in 2002 on Monument/Columbia Records. It is notable for its acoustic bluegrass sound, which stands in contrast with their previous two country pop albums.
Document 5: Complainte pour Ste. Catherine: Complainte pour Ste. Catherine is a song written by Canadians Philippe Tatartcheff & Anna McGarrigle, first featured on Kate & Anna McGarrigle's eponymous debut album, "Kate & Anna McGarrigle", released in 1976.
Document 6: Have One on Me: Have One on Me is the third studio album by American singer-songwriter Joanna Newsom, released on February 23, 2010 via Drag City as the official follow up to the harpist's highly acclaimed second studio release, 2006's "Ys". It is a triple album produced by herself and mixed by long-time collaborators Jim O'Rourke and Noah Georgeson, with the accompanying arrangements by Ryan Francesconi. "Have One on Me" continues Newsom's use of cryptic, pastoral lyrics, with a further progression of elements of her sound such as the orchestral accompaniment and the arrangements – with the inclusion of diverse instruments like the tambura, the harpsichord and the kaval. The production also flirts with genres such as jazz and blues in some of the tracks, while adding drums and the electric guitar in others. The album is also her first since "The Milk-Eyed Mender" to include songs played on the piano instead of the harp. Because of health problems, Newsom's voice was damaged during the sessions consequently affecting the overall recording process and forcing the harpist to change her singing style.
Document 7: Spark (Marit Larsen album): Spark is the third album from Norwegian singer-songwriter Marit Larsen, and was released on November 18, 2011. The information was made available via Marit Larsen's Tumblr page. On 31 July 2011 Marit Larsen began to post information about her third album on her Tumblr. On 7 October 2011 she announced the name of the album and track list. The first single, "Coming Home" had premiered on NRK P3 and on her Facebook page on 15 October. The album produced two singles; "Coming Home" and "Don't Move". The album spawned 2 number one songs in the Philippine Top 100 Songs Chart where in "Coming Home" stayed atop for 4 consecutive weeks, which gave Marit her first number one song in the Philippines as a solo artist and her non-single song "Last Night" stayed for 2 consecutive weeks in the early 2012, serving as her second number one song.
Document 8: Kate McGarrigle: Kate McGarrigle, CM (February 6, 1946 – January 18, 2010) was a Canadian folk music singer-songwriter, who wrote and performed as a duo with her sister Anna McGarrigle.
Document 9: Homesick (A Day to Remember album): Homesick is the third studio album by American rock band A Day to Remember, produced by Chad Gilbert and the band, and released in February 2009. It was the band's second album for Victory. The album features material written while the band had been touring, which Andrew Wade helped them demo. Recording took place between October and November 2008 at The Wade Studio, located in Ocala. Featured on the album are guest vocalists Mike Hranica (The Devil Wears Prada), Vincent Bennett (The Acacia Strain) and Sierra Kusterbeck (VersaEmerge). Recorded during the album sessions but remaining unreleased is an instrumental called "Money Maker". Several of the album's songs appeared on the band's MySpace profile before the release of the album.
Document 10: The McGarrigle Christmas Hour: The McGarrigle Christmas Hour is the tenth album by Kate & Anna McGarrigle, released in 2005. A sequel to their 1998 album "The McGarrigle Hour", the album features a program of Christmas music recorded by the McGarrigles, their family and a number of friends and collaborators. It was also the last album to be released by the duo before Kate's death in 2010.
Document 11: Come Home to Mama: Come Home to Mama is the third studio album by singer-songwriter Martha Wainwright, released on October 15, 2012. The album was recorded at Sean Lennon's home studio in New York City and produced by Yuka Honda. Guest musicians include Honda, Lennon, Wilco guitarist Nels Cline and Dirty Three drummer Jim White. "Proserpina", the album's first single, was written by Wainwright's deceased mother, Kate McGarrigle.
Document 12: Find Your Worth, Come Home: Find Your Worth, Come Home is the second studio album by American metalcore band To Speak of Wolves it was released on May 22, 2012 through Solid State. Produced by Matt McClellan, the record was recorded at Glow In The Dark Studios in Atlanta, Georgia from 2011−2012. The album is a follow up to To Speak Of Wolves's 2010 album; "Myself Is Less Than Letting Go", the album features with the new member of the band Seth Webster in substitution of Will McCutcheon in 2012 and William "Gage" Speas is substitution of Rick Jacobs, also features the member from the Oh, Sleeper's band Micah Kinard. The official song for promote the album was "Hivemind", the lead single is the song called "Je Suis Fini" premiered on YouTube on May 14, 2012.
Document 13: Kate &amp; Anna McGarrigle: Kate McGarrigle (February 6, 1946 – January 18, 2010) and Anna McGarrigle (born December 4, 1944) were a duo of Canadian singer-songwriters from Quebec, who performed until Kate McGarrigle's death on January 18, 2010.
Document 14: Home (Leah McFall song): "Home" is a song recorded by British singer Leah McFall, the runner-up on the second series of the BBC talent show "The Voice", featuring guest vocals from her show mentor will.i.am. Built around a sample from American indie folk band Edward Sharpe & The Magnetic Zeros's same-titled 2010 song, it was written and produced by Jean-Baptiste, Ryan Buendia, Michael McHenry, and will.i.am and released through Capitol Records on July 27, 2014. This song also featured in the latest film, "The Book of Life".
Document 15: Homecoming (Kanye West song): "Homecoming" is a song by American hip-hop recording artist and record producer Kanye West. It was included as the twelfth song on the track-listing of his third studio album "Graduation" (2007). The track was produced by West with Warryn Campbell and features a guest appearance from Chris Martin, lead vocalist of the English alternative rock band Coldplay, who sings the song's chorus. West met Chris Martin by chance at the famed Abbey Road Studios in London, England on February 14, 2006. Afterwards, the two artists held an impromptu jam session and recorded the track. "Homecoming" is actually a reworking of a track known as "Home (Windy)" that originated from a demo tape dating back to the year 2001. The early recordings of "Home (Windy)" exhibit West's once trademark soulful vocal sample production style. Additionally, the lyrics of the song's chorus are different than that of Martin's and were originally sung by singer John Legend, who was known at the time as John Stephens. West wrote "Homecoming" as a tribute dedicated to his hometown of Chicago, Illinois. His conceptual lyrics feature an extended metaphor where he uses a love interest to speak on his relationship with the city.
ground_truth: Kate McGarrigle