The latter have included violinist Giuliano Carmignola, violists Wolfram Christ and Diemut Poppen, double-bass player Alois Posch, oboist Lucas Macias Navarro, flautist Jacques Zoon, horn player Alessio Allegrini. Diego Matheuz is Principal Guest Conductor of the Orchestra Mozart. The orchestra conducted by Claudio Abbado is featured on several Deutsche Grammophon CDs, mainly of Wolfgang Amadeus Mozart compositions. Deutsche Grammophon released Abbado's first recordings with the orchestra on its period imprint Archiv, despite the use of modern instruments; the later albums have been released under the yellow label. Orchestra Mozart homepage