This 33-CD set stands as the most complete collection of recordings of Debussy’s music ever made: it comprises all his known works, including four pieces in world premiere recordings which were made especially for this edition. Compiled in collaboration with renowned Debussy expert Denis Herlin (responsible for several critical editions of Debussy’s music for Durand, the composer’s publisher), the box comprises recordings carefully chosen for their artistic quality and their authenticity of spirit. They span more than a century, even including recordings made by Debussy himself – he was a superb pianist. Many other distinguished names are among the performers, including a suitably impressive contingent from France.

Being complete, the set complements much-loved masterpieces, the foundation of Debussy’s reputation, with works that remain lesser-known or which have even remained undiscovered until now.

It includes transcriptions/orchestrations of Debussy’s works by other composers that Debussy himself approved, and also Debussy’s own transcriptions of works by other composers, some of them previously unrecorded.

Among the works given world-premiere recordings are:
- Chanson des brises (1882) for female voices and piano
- Diane au bois (1885-87) for soprano, ténor et piano
- The first version (1898) of the Chansons de Charles d’Orléans
- Fragments of the opera La Chute de la maison Usher (1916) as Debussy left it
- Piano reductions of Khamma and Jeux by the composer.

Debussy himself can be heard accompanying the Scottish soprano Mary Garden (his original Mélisande) in the Ariettes oubliées and a short extract from Pelléas et Mélisande, and in various piano works, recorded for the gramophone and in the form of piano rolls.

The recording of the mystery play with music Le Martyre de saint Sébastien, conducted by André Cluytens, is the only recording to present Gabriele d’Annunzio’s complete text.