Reznikoff earned a degree in mathematics from the University of Paris in 1966, subsequently serving as a professor and lecturer in the field at universities throughout France. He gave his first concerts in the field of ancient Christian chant in 1975, and today is particularly noted for his unique interpretation of the Gregorian chant. He has also worked extensively on resonance in Palaeolithic caves and caverns, as well as in that of modern edifices. In the field of sound therapy, he explores the human singing voice as a means of addressing certain pathologies.

Reznikoff has given concerts and performed at international music festivals on ancient music and music of oral traditions throughout Europe, the US, and Japan. A professor in the philosophy department of the University of Paris X (Nanterre), he has also guest lectured in several prestigious conservatories and religious communities. He had the honour of singing before the Dalai Lama in Zurich in 1991, and in the Shinto ceremonies for the millennium festivities in Kyoto in the year 2000, as well as in exceptional architectural sites such as the Temple of Apollo in Delphos, Greece and in the Basilica of Saint Francis in Assisi, Italy.