From 1973 to 1975, Drillon published his first series of film critiques in a local newspaper, ''L'Écran lorrain''. In 1975, he moved to
Paris and became a producer at
France Musique. He earned a sound engineering internship with the
Institut national de l'audiovisuel and resigned from France Musique in 1977. In 1978, he joined the newly formed
Monde de la musique monthly magazine. From 1982 to 1984, he served as its head of service. In 1981, he took over the classical music section of
Le Nouvel Observateur from
Maurice Fleuret. From 1983 to 1985, he wrote a musical column in the monthly magazine ''Tintam'arts
, run by TF1. In 1995, he founded the monthly magazine Symphonia'' and served as its director until 1997. Drillon contributed to various notable newspapers across France, such as
Le Figaro,
Le Monde,
Libération, and others. In 2003, he took over the crossword section of
Le Nouvel Observateur, previously run by . On 17 August 2016, he published
Vingt-sept cartes postales à Alain Cavalier on BibliObs, the online edition of
Le Nouvel Observateur, now called ''L'Obs
. On 1 March 2017, he announced his departure from L'Obs'', which came into effect two months later. He died of an
oligodendroglioma on 25 December 2021, at the age of 67. ==Publications==