Christian Jost (born 29 September 1975), best known by his stage name Falk Maria Schlegel, is a German musician. He is best known as the keyboardist of power metal band Powerwolf, and was a member of Red Aim and The Experience.

Jost started as a keyboardist of the progressive thrash metal band The Experience in 1993. He created layout for their Insight album. He joined Red Aim in 2002 under the stage names Ray Kitzler and Ray Volver. In 2003, along with other Red Aim members he joined Powerwolf. He takes care of all the organizational matters of the band and is the link between management, record label and booking agency. He also takes care of the most important aspects of the tour planning, the logistic implementation of the various stage designs and all other applicable planning and implementation.