• Barbara Kozelj

    Her fantastic analytic ability and personal approach have helped me discover many aspects of my voice.
    Barbara Kozelj, mezzo-soprano (Slovenia)

  • Gulnara Shafigullina

    Sasja as a teacher combines unique qualities: open,warm and cheerful personality, many singing knowledges, curiosity and passion to her students and to the music they are making.
    Gulnara Shafigullina, soprano (Russia)

  • Alexander Oliver

    Veel studenten die bij Sasja studeerden, hebben een uitstekende carrière in de beroepspraktijk.
    Alexander Oliver, Artistiek leider Dutch National Opera Academy

  • Sonja Volten

    She is honest and direct, but always looking out for your best interest, which is why she is very trustworthy.
    Sonja Volten, sopraan (Nederland)