 Complete the following phrase:  Kazlaus biggest breakthrough came in Andorra in 2000, during the master classes given by Spanish soprano Montserrat Caballé. Having witnessed her performance, Caballe greeted and complimented her: We have a diva, a wonderful voice. The encounter led to an artistic collaboration between them, glimpses of which are featured in the documentary Caballe, Beyond Music Morena Films, 2003 and in Montserrat Caballé 40 anys al Liceu Fundacio Gran Teatre del Liceu, 2002. She was also a main guest at the Montserrat Caballé prasentiert Stars von Morgen Franco-German 