De Senneville began his career as a journalist working for French newspapers such as France Soir.

In 1968, while managing Michel Polnareff's career, he met Olivier Toussaint, with the two later forming a successful songwriting partnership.

Their songs were recorded by major French artists such as: Mireille Mathieu, Michèle Torr, Christophe, Hervé Vilard, Dalida, Petula Clark and Claude François.

The song reached #1 on the charts of France, Switzerland, Belgium and became a Top 10 hit in Germany, Austria, and the Netherlands.

Besides Jean-Claude Borelly, they discovered French instrumentalists such as Richard Clayderman (1976), Nicolas de Angelis (1981) and Diego Modena (1991).

De Senneville and Toussaint collaborated with famous French arrangers such as: Gérard Salesses, Hervé Roy, Bruno Ribera, and Marc Minier.

"Ballade pour Adeline", "A Comme Amour" and "Lettre à ma Mère" are the biggest hits in Clayderman's recordings.