After early film work, humanities studies at the Eberhard Karls Universität Tübingen and scholarships at the Istituto Italiano per gli Studi Filosofici in Naples, in 1985/86 he became an assistant to Yuri Ljubimov at the Staatstheater in Stuttgart and Karlsruhe and to Beckett's collaborator Helfrid Foron in Tubingen 1986; he was also the production manager at the Landeskunstwochen in Tübingen. From 1987 to 1993 he was responsible for the International Concert Programme and for chamber opera productions in Sindelfingen and also held the position of artistic director at the Theaterkeller. Since that time he has been active as a director in thefields of spoken and musical theatre,Schönleber became artistic director of the ailing Rossini Opera Festival in Wildbad in 1992 and has developed the festival since into a world-renowned experimental site for bel canto talents, works by Rossini, unknownworks and the entire bel canto repertoire. He initiated a number of world premieres and first performances, including two works by Wolfgang Rihm, Stockhausen, Kagel, Schnebel, Carlucci, Taralli and others. However, modern first performances of classical bel canto works were particularly numerous, including works by Rossini, Meyerbeer, Mercadante and Pacini , Generali, Mayr, Pavesi and many others. Schönleber has also been the founding director of the BelCanto Academy since 2004. He has produced numerous CDs of the bel canto repertoire, especially for the classical label NAXOS. Schönleber attracted numerous young bel canto talents to Bad Wildbad, such as Agata Bienkowska in 1998 or Pavol Breslik in 2000, who became a soloist for a CD recording from the choir. The establishment of the BelCanto Academy in Bad Wildbad in 2004 created the opportunity to promote numerous young top talents: In the founding project of the Academy, the young Joyce DiDonato sang Cenerentola under Alberto Zedda. The recording at the NAXOS label is still considered a reference recording. DiDonato, Zedda, Pratico, as well as Kurt Widmer, taught in this project, in which the Bavarian Theater Academy August Everding took part with a group of students. The academy was joined by Olga Peretyatko, Michael Spyres, Jessica Pratt, Diana Haller, Serena Saenz, Marina Viotti, Sara Blanch and many more. visited, whose careers Schönleber promoted. Several of the above were awarded the festival's International BelCanto Prize. Schönleberteaches regularly at the BelCanto Academy and has given courses at the Opera Studio of the University of Alcalà and the Escuela de Canto superior in Madrid, at the Accademia del Maggio musicale Firenze, at the Academy Concertante Barcelona and at the Tongji University, Shanghai