Thilo Fechner was born in Berlin. The son of a family of musicians studied at the University of Arts Berlin and at Juilliard School New York.
Already during his studies Thilo Fechner had acquired plenty of orchestral practice. He was a member of the Herbert von Karajan Academy of the Berlin Philharmonic and the Berlin Baroque Orchestra.
In 1996 he was engaged with the Orchestre de la Suisse Romande in Geneva, in 1997 he signed with the Munich Philharmonic Orchestra. Having been repeatedly involved at the Bayreuth Festival, he became a member of Vienna State Opera Orchestra and the Vienna Philharmonic in 2004.