The title Memento signifies both a memorial tribute and a fitting continuation of Bach's ideas: Widor does not restrict himself to a mere transcription of the originals to the organ, rather he "orchestrates" Bach's originals. In some of the instances he reshapes the original concept into a work of art of his own by creating an extended paraphrase of the original. In so doing, Widor intervenes in the pieces in an original way, adds parts, alters harmonies or even the entire form. In this way an orchestral composition with fleshed out instrumentation emerges in the arrangements which permits an atmospheric tracing and differentieated weaving of the individual voices.