The first single from the album, "Parler à mon père" was released on 2 July 2012 and "Le miracle" was selected as the second track to promote Sans attendre.

The various themes in the songs include longing for a departed father, the cruelty of love, the healing power of tears, the waning days of an ageing mother or the misery of a baby's death.

The French album would feature all new material and the English one would include studio versions of previously unreleased songs from Dion's Las Vegas show, Celine, as well as several brand new tracks.

[2] On 29 June 2012, celinedion.com previewed a thirty-second fragment of the first single written and co-produced by Jacques Veneruso, "Parler à mon père" from the French-language album which was scheduled for release on 5 November 2012.

[3] The full version of "Parler à mon père" premiered on 1 July 2012 and the single was released to digital outlets in selected countries on the next day.

[7] On 19 August 2012, Dion's official website posted information that the album will include "Une chance qu'on s'a", a duet with Canadian artist Jean-Pierre Ferland, who also wrote the song's lyrics.

[11][12] It was filmed in Las Vegas on 16 July 2012 and in the Death Valley, and directed by Thierry Vargnes who previously worked with Dion on the music videos for "Et s'il n'en restait qu'une (je serais celle-là)" and "Immensité".

On 1 October 2012, Dion's official website presented the album's cover art and announced in a press release that Sans attendre will be released in two versions: standard edition with fourteen tracks and twenty-four-page booklet in jewel case and deluxe edition with sixteen songs, twenty-four-page booklet and a twelve-page desk calendar in a special digipak.

He is the author of many of her French-language hits, including "Sous le vent", "Tout l'or des hommes" and "Je ne vous oublie pas".

He worked with Dion previously on D'elles and was responsible for her French number-one single, "Et s'il n'en restait qu'une (je serais celle-là)".

[13] Sans attendre also includes a studio version of "Ne me quitte pas", which Dion performed during her Las Vegas residency show, Celine.

[16] In May 2013, the deluxe edition of Sans attendre was re-released in France, Belgium and Switzerland including a fifty-six-page notebook with drawings by Aurore Hutton, replacing the desk calendar.

[17][18] For the release of her new French-language album, Dion taped a television special, Céline Dion… Sans attendre in Montreal on 15 October 2012 which was broadcast on 4 November 2012 on TVA.

[19] She performed selected songs from Sans attendre, including: "Parler à mon père", "Je n'ai pas besoin d'amour", "Une chance qu'on s'a" with Jean-Pierre Ferland, "Celle qui m'a tout appris", "Que toi au monde", "La mer et l'enfant" and "Le miracle".

[20][21] Also for the promotion in Quebec, Dion performed "Je n'ai pas besoin d'amour" on Tout le monde en parle which aired on 11 November 2012.

She also performed duets with Patrick Bruel on "Qui a le droit...", Florent Pagny on "J'irai où tu iras" and Michel Sardou on "Voler", and sang few of her hits.

[25][26] The television special became the second most-watched show that night, drawing an audience of 4,874,000 viewers and losing only slightly to Danse avec les stars with 5,040,000 million followers.

[29] On 2 December 2012, she appeared in Chabada on France 3 and sang three songs from Sans attendre: "Le miracle", "Ne me quitte pas" with Florent Pagny, and "Parler à mon père".

[36] Six months later on 27 July 2013, Dion performed six songs from Sans attendre during her one night only concert in Quebec, called Céline... une seule fois.

[38] During her visit in France in November and December 2013, Dion performed "Parler à mon père" and "Qui peut vivre sans amour?"

According to Bernard Perusse from The Gazette, the album is full of big dramatic emotion with various themes in the songs: longing for a departed father, the cruelty of love, the healing power of tears, the waning days of an aging mother, the emotional consolation sought by a single parent, the loss of a lover to war, the realization that a long-standing relationship is dead, the misery of a baby's death and the romantic upheaval of a serious fight.

Perusse praised the "lightly-orchestrated" "Moi quand je pleure" with unusual chord structure, the "refreshingly subdued" "Parler à mon père" and "Le miracle", a "forceful attack" on Jacques Brel's classic "Ne me quitte pas" and the "serviceable pop" of "Les jours comme ça".

Repentigny also mentioned "Tant de temps" as a "beautiful" track and a "great vintage", quite different from the version published on Henri Salvador's bossa nova album of the same name, released earlier in 2012.

Although Tyler criticized the album's "slightly cheesy chick lit-style graphics", he wrote that Sans attendre contains stylish modern pop of a type that "begs to be heard beyond the world it's addressing".

[60] Paula Haddad from Music Story praised the playful melody of "Moi quand je pleure" and wrote that the accordion-driven "La mer et l'enfant" is the most beautiful song dedicated to motherhood.

Among good tracks she also mentioned "Le miracle" with "fresh spring-like" background vocals, the brisk opener "Parler à mon père", "Une chance qu'on s'a" which she compared to "Beauty and the Beast", quiet and melancholic "Que toi au monde", and "Les petits pieds de Léa" with the intro which sounds like the melody of a music box.

Hermann praised the playful and girlish look of the album cover and booklet, "lovingly" illustrated with hearts, children's toys and clef that alludes to Dion's double life as a singer and mother.

", "Si je n'ai rien de toi", "Le miracle", "Parler à mon père" and "Ne me quitte pas".

On the other hand, themes of life and dead are mixed on tracks like "Les petits pieds de Léa" and "Parler à mon père".

The single, "Le miracle" which is "one big ray of sunshine" in this melancholy album, is not very original, the same as "Celle qui m'a tout appris", "Que toi au monde" and "Une chance qu'on s'a".