From the age of 4, Juan-Sébastien Jimenez immersed himself in an intense musical atmosphere in Venezuela, playing "small" percussion instruments (maracas, bongos, etc.) alongside his father, the musician Guillermo Jimenez Leal, a singer and songwriter. Until the age of 14, he evolved in the Latin American scene in Paris. Then, at "Claude Monet" high school, musician and music teacher Annick Chartreux introduced him to drums within the school orchestra, where he discovered Jazz. A few years later, he switched to bass and took classical guitar lessons. It was at the conservatory in the 5th arrondissement where he learned four-part writing and classical percussion. At the age of 18, he began his professional career more concretely with his favorite instrument, the six-string bass. Initially at C.I.M as a drummer and later as a bassist, he met other young musicians with whom he honed his knowledge of jazz. In 1993, he met Alfredo Rodriguez, deepening his knowledge of Afro-Cuban music and playing with numerous Latin musicians such as Miguel "Anga" Diaz, Orlando Poleo, Orlando "Maraca" Valle, Eddy Palmieri, Patato Valdez, Raul Paz. The "tres" (Cuban guitar with 3 double strings) then became one of the instruments practiced by J.S Jimenez. Simultaneously, he continued to explore jazz and Brazilian music, collaborating with Nelson Veras, Nene (Hermeto Pascoal's drummer), Rafael Lima (Swiss), Raoul De Souza, Carlos Nando (Angolan musician), and many others at venues like "Pao Brazil," "Le Divan du Monde," "Le Baiser Salé," etc. Juan-Sébastien Jimenez also had the opportunity to work with Paco Sery, Mario Canonge, Jean-Phillipe Fanfan, with whom he discovered the African and Caribbean dimension. Concurrently, he formed his own jazz and fusion groups like "D.K.E" (with Jerome Sabbagh), "Hexane" (2nd prize winner at the Avignon competition), and performed in Parisian clubs. During these concerts, he crossed paths with Birelli Lagrenne, sharing some privileged musical moments. With and thanks to Claude Sommier (Leader of the DJOA group), he played with François Laizeau, Xavier Dessandre, and Jean Marc Larchet. Around the same time, he explored the repertoire of Jimmy Hendrix in Byron Holmes' trio.