Charles Callet was born in Bron, a suburb of Lyon, France. From his childhood he suffered from osteogenesis imperfecta (brittle bone disease), which caused that he had to be hospitalized often. He got an international success by composing various chansons pour singer Eve Brenner, especially with Le Matin sur la Rivière (1976). Other typical compositions are Radio Sex Appeal (1982) and Zanzibar (1984).

In 1986 he bought an Amstrad CPC 464 so he could create a utility that would enable him to compose his own scores. Though he had no background in information technology, he wrote a program in Basic in six months, which was commercialized as "Amstradeus."
In the same period he began to collaborate with Infogrames and in a couple of years he created scores for over a dozen games. Later on, in the early nineties, he composed for various games by Coktel Vision, and he continued to compose for the company after it had become part of Sierra On-Line in 1993.

Callet was married to the opera singer Nicole Subtil. Both were members of the Scientology Church, for which he was very active during the last years of his life.