Christoph Keller studied at the Conservatories of Saarbrücken and Karlsruhe, Germany, and at the Conservatoire d´Issy-les-Moulineaux in Paris. In Saarbrücken, he passed his exam for Catholic Church music (B-exam) and for musical education, supplemented by a further degree for organ (Konzertreife-Diplom) in Prof. André Luy's master class. After his exam for becoming a director of a church choir (A-exam) in Karlsruhe, he continued his musical education in Paris under Prof. Daniel Roth. In Paris, Saarbrücken and Karlsruhe, he passed his exams in "Artistic Organ Playing" and in "Improvisation" with distinction. Furthermore, he was awarded two scholarships from Northrhine-Westphalia. One of them enabled him to participate in the "International Organ Academy at the Altenberg Cathedral".