L'heptade is composed of seven core songs, in order: Comme un fou (Like a mad man), Chanson noire (Black song), Le premier ciel (The first heaven), L'exil (The exile), Le corridor (The hallway), Lumières de vie (Lights of life), and Comme un sage (Like a wise man).

The title, heptade, is the compound of two Greek affixes, hept- (seven) and -ade, which expresses both the notion of group (décade, pléiade) and epic movement (as in Iliad).

[2] His singing is often counterbalanced by a chorus formed by well-known Quebec singers of the time, including Beau Dommage's Pierre Bertrand, Les Séguin's Richard, and Ville Émard Blues Band's Estelle Ste-Croix.

These interludes are the result of the collaboration between Fiori and classical music composer and teacher Neil Chotem, and are played either by a single synthesizer or with the Montreal Symphony Orchestra.

A major theme, recurring in all songs of the album, is the antithesis of the world: the Black and White, the Light and Darkness, the Day and Night.

In the original cover of the album, the only printed lyrics were a section of "Lumières de vie", where the character begs to be spoken of love in order to overcome both nights and days (...Lumières de vie... parle-moi d'amour, assez pour éclipser les deux [la nuit, le jour] pour toujours).

While a large part of this amount was provided by a new contract signed with CBS, the musicians still had to contribute to the financing of the production.Big Bang Mag The album was released in 1976.

However these tapes were later found undamaged and a remixing and remastering project was done by Serge Fiori and Louis Valois[4] and released as L'heptade XL in November 2016.

[4] For the occasion, a new song, called C'est dans le noir, which was recorded at the National Arts Centre in Ottawa during the original tour for the album, has been released on iTunes.