[3][4][5] In April 2013, Natasha St-Pier stated during a broadcast of the radio programme Faites entrer l'invité (presented by Michel Drucker) that she is a cousin four times removed of Pope Pius X.

In 1992, she was spotted by Alain Morisod and invited to participate in the Sweet People Show, a program for young talents produced by a local television station in Quebec.

In July 1995, she recorded her first single: "Le parcours du cœur", written to celebrate the fifth anniversary of the Maurice Tanguay Foundation for underprivileged children.

Producer Guy Cloutier then decided to help St-Pier and offered her a partnership, in which he invested about one million Canadian dollars in the further development of her career.

In the late 1990s, during a tour in Quebec, she was offered the opportunity to replace Julie Zenatti in the role of Fleur-de-lys for the Canadian French-language production of Notre-Dame de Paris (directed by Luc Plamondon).

[11] She received the maximum score of 12 points from three countries (Bosnia & Herzegovina, Portugal and Russia), gaining fourth place overall among the 23 participants.

[12] In 2002, her collaboration with Pascal Obispo on the album De l'amour le mieux propelled Natasha St-Pier to her greatest commercial success.

Her victory, with that of Lynda Lemay as Top Female Artist of the year, received favourable remarks in the Canadian House of Commons from Mark Assad (Liberal, Gatineau) and Robert Lanctôt (Bloc Québécois, Châteauguay) two days later.

St-Pier also appeared in a duo with Johnny Hallyday at concerts to celebrate his 60th birthday at the Parc des Princes in Paris (10 and 11 June 2003).

[28] She promoted the album with the singles "Tant que c'est toi", "Quand on cherche l' amour", "Je te souhaite" and "Mourir demain" (recorded with Pascal Obispo); the latter sold 182,000 copies in France and was ranked #24 in the European charts.

[30][31] At the beginning of January 2006, St-Pier released a studio album entitled Longueur d'ondes,[32] including the singles "Un ange frappe à ma porte", "Ce silence" and "Tant que j'existerai".

The event, presented by Michel Drucker and Claudy Siar, was broadcast live in prime-time on France 3 under the title Eurovision 2006, et si c'était vous?.

[37] In November 2009, she released her seventh album, Tu Trouveras: 10 Ans De Succès, which is largely a "Best of" compilation of previously recorded songs, but also included the new single "L'instant T".

[41] The same year, Natasha St-Pier opened the 20th Salon du Chocolat at Paris, wearing a dress made of chocolate in the style of a geisha (芸者).

Roberto Ciurleo conceived the idea of setting to music the devotional poetry of Saint Thérèse of Lisieux, and commissioned French musician Grégoire as composer.

Also in 2013, she recorded the song "Aimer" with the male quartet Il Divo; it appeared as a track on the group's album A Musical Affair (French edition), released in November 2013.

Other singers recording tracks on the album with the quartet included Hélène Ségara, Florent Pagny, Anggun, Lisa Angell, Vincent Niclo and Sonia Lacen.

[46][47] On 7 December 2013, St-Pier and Anggun were invited to sing their duet "Vivre d'amour" at the 21st annual Vatican Christmas concert (Concerto di Natale XXI edizione) in Auditorium della Conciliazione, Rome.

Several songs were recorded as duets with singers including Roch Voisine, Michel Fugain, Grégoire, Tony Carreira, Edith Kit Godin and Danny Boudreau.

[55] In 2016, St-Pier recorded the song "Mon pays bleu", originally written by Roger Whittaker as "Durham Town (The Leavin')".

On 9 August 2018, St-Pier gave a concert ("Confidences pour un piano") at Courseulles-sur-Mer in Normandy, as part of a week-long festival of Acadian culture ("La semaine Acadienne").

She wrote three of the song texts ("Par amour" and "Peu m’importe"), which were set to music by Vincent Bidal (jazz pianist, composer and producer).

[65] St-Pier has recorded duets (and trios) with Pascal Obispo, Florent Pagny, Mickaël Miro, Anggun, Élisa Tovati, Sonia Lacen, Grégory Turpin, Les Stentors, Les Petits Chanteurs à la Croix de Bois, Jean-Michel Di Falco, Roch Voisine, Tony Carreira, Michel Fugain, Grégoire, Florent Mothe, Hélène Segara, Vincent Niclo, Anne Sila and Glorious, among others.

In 2024, St-Pier announced a new tour between November 2025 and January 2026 under the title "Mon histoire d'amour c'est vous", with concerts in France featuring her great hits and giving homage to composers and singers who have inspired her.

Other singers performing on the evening included Julie Zenatti, Emmanuelle Seigner, Arielle Dombasle, Stanislas, Sylvie Vartan, Sanseverino and Micky Green.

[72] Beginning 2001-2004, the French media began referring to St-Pier as one of the grandes voix québécoises (big Quebecois voices) at the centre of contemporary trends in popular music.

Other singers grouped in this category included Isabelle Boulay, Céline Dion, Lara Fabian, Garou, Daniel Lavoie, Lynda Lemay, Bruno Pelletier and Roch Voisine.

However, the musicologist Catherine Rudent concludes that only Boulay, Dion and Fabian truly resemble St-Pier in répertoire, voice and techniques of interpretation.

[73] On 9 March 2012, she married her boyfriend of a year and a half, Gregory Quillacq, a member of the aquatic and subaquatic fire brigade of Paris).

[74] St-Pier has a son named Bixente Maxime (born 13 November 2015), who underwent a successful operation to correct a congenital heart malformation.