• Singing with Joep is an absolute blast. He’s bursting with energy, inspires, makes exciting arrangements, and hears everything.

    —Arno Schans

  • Joep is a passionate and highly skilled voice coach. He gets people to reach with their voice what they never thought was possible.

    —Marcia Luyten

  • Singing with Joep was one of those rare experiences in which you are immediately aware that you are in the hands of a true expert.

    —Rory Matthews

  • Joep is an amazing vocal coach, and fantastic personality. Always sparkling with contagious enthusiasm and positive energy, he makes you love your own voice.

    —Vladka Meduzova