John Eyzen made his debut on stage at the age of three, in the musical school 'Glamour Dance Studio'.

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When he was seven, he joined 'Kids on the Beach' Company and 'Luckine Dance Company', where he learned singing, acting, and various dance genres including jazz, classical, hip-hop and tap. For 11 years of training, he was on stage every week.

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At the age of sixteen, John formed the group 'Eyzen', with whom he had several years of concerts in France then recorded an album.

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In September 2004, John was selected for the cast in a French TV show 'Star Academy'. During this experience, he sang duets with Lenny Kravitz, Calogero, Florent Pagny, Garou, and sang in the chorus for Phil Collins.