During his studies he discovered a passion for photography, which brought him into contact with the music business: through a family friend he had a chance to make record sleeves for artists like Alice Dona, Hervé Vilard and Gilbert Bécaud.
Just when he was about to lose his record deal with Pathé due to failure of success, Nicolas released the critically acclaimed 1975 song So far away from L.A., which made him an overnight star.
Dropping his medical studies almost near the end (in his sixth year), he concentrated on his musical career, releasing his next hit song Et mon père ("And my father") for which he received a 'French Grammy', the prix de l’UNAC.
Continuing the 1975 success, Nicolas released several albums, and was supporting act for stars like Serge Lama, Marie-Paule Belle et Dalida.
At the end of the eighties, Nicolas faced a relational crisis and professional difficulties, and he fell into a severe depression, abandoning the music scene and failing to finish his novel and songs he was writing.
In 1992, Nicolas' close friend and colleague Michel Berger suddenly died of a heart attack, prompting him to take control of his life again.