Cellier was the founder of the "Disques Cellier" recording label. From 1960, and for the next 25 years, he hosted a weekly radio show on "Radio Suisse Romande", which he called "From the Black Sea to the Baltic".
In the 1960s, Cellier extensively researched Romanian folk music, which led to his discovery of Gheorghe Zamfir. In 1984, he was presented with the "Grand prix audiovisuel de l'Europe" from the Académie du disque français in Paris. In 1989, he was awarded a Grammy for producing Le Mystère des Voix Bulgares, Vol. II which featured, among others, the Bulgarian State Television Female Vocal Choir.
In 2012, a documentary called Balkan Melodie was made about his travels in Eastern Europe.
Gheorghe Zamfir (1969) LP: Arion France 30 T 073
La Doina Roumaine (1969) LP/CD: DC 001
Flûte de Pan et Orgue– Gheorghe Zamfir/Marcel Cellier vol.1 (1970) LP/CD: DC 002
Flûte de Pan et Orgue– Gheorghe Zamfir/Marcel Cellier vol 2 (1971) LP/CD: DC 003
Les Virtuoses Roumains vol.1 (1972) LP: DC 004
Flûte de Pan et Orgue– Gheorghe Zamfir/Marcel Cellier vol.3 (1972) LP/CD: DC 005
Le Concert des Virtuoses Roumains (1975) LP/CD: DC 006
Taragot et Orgue– Dumitru Farcas/Marcel Cellier vol. 1 (1975) LP/CD: DC 007