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Leslie Feist was born on 13 February 1976 in Amherst, Nova Scotia, Canada. Her parents are both artists. Her father, Harold Feist, is an American-Canadian abstract expressionist painter who taught at both the Alberta College of Art and Design and Mount Allison University in Sackville, New Brunswick. Her mother, Lyn Feist, was a student of ceramics from Saskatchewan.

In 1991, at age 15, Feist got her start in music when she founded and was the lead vocalist for a Calgary punk band called Placebo (not to be confused with the English band Placebo). She and her bandmates won a local Battle of the Bands competition and were awarded the opening slot at the festival Infest 1993, featuring the Ramones. At this concert she met Brendan Canning, whose band hHead performed immediately before hers, and with whom she joined in Broken Social Scene ten years later.  In 1995, Feist was forced to take time off from music to recover from vocal cord damage. She moved from Calgary to Toronto in 1996. That year she was asked by Noah Mintz of hHead to play bass in his solo project Noah's Arkweld. She played the bass guitar in Noah's Arkweld for a year despite never having played bass before. In 1998, she became the rhythm guitarist for the band By Divine Right and toured with them throughout 1998, 1999, and 2000. She also played guitar for some live performances by Bodega, but was never an official member of the band.  In 1999, Feist moved into a Queen West apartment above Come As You Are with a friend of a friend, Merrill Nisker, who then began to perform as electro-punk musician Peaches. Feist worked the back of the stage at Peaches' shows, using a sock puppet and calling herself "Bitch Lap Lap". The two also toured together in England from 2000-2001, staying with Justine Frischmann of Elastica and MIA Feist appeared as a guest vocalist on The Teaches of Peaches. Feist appears in Peaches' video for the song "Lovertits", suggestively rubbing and licking a bike. Later, Feist covered this song with Gonzales (whom she met while touring with Peaches) on her album Open Season. In 2006, Feist contributed backup vocals on a track entitled "Give 'Er", which appeared on Peaches' album Impeach My Bush.
Feist (singer)