Jean-Pierre Leloir was passionate about music and curious about everything. As a photographer in walk he took a multiple look at what surrounded him. He photographed the movement, light, sounds, life. He built up very early his picture library and constituted so from 1951 archives with varied subjects: reports for the industry, previews for historic exhibitions and reproducing paintings, theaters and classical music, jazz or variety concert, recording sessions and rehearsals, but also interior decoration and architecture, and numerous images of his journey around the world (Argentina, Brasilia, Chile, USA and Europe).
His meetings with many remarkable artists of the 20th century, from Edith Piaf to Charles Trenet, Billie Holiday to Wynton Marsalis, Johnny Hallyday to Alain Bashung and immortalized on film, participated in the testimony of his memories.
His attentive look enabled him to participated in unforgettable adventures. For example the one of the Théâtre National Populaire of Jean Vilar, the Ochestre de Paris. Nevertheless he never stopped his collaboration with the music world. He often exhibited photographs of artists he liked. Partner of the press world, Jean-Pierre Leloir worked with the magazines Jazz Man, Jazz Magazine, La Maison française, l'Express et le Nouvel Observateur. He was even one of the founders of Rock & Folk with Philippe Koechlin.