Emma Kok, a 15yr Dutch singer suffering from gastroparesis was invited by André Rieu (who was so impressed by her talents) to perform "Voilà" at his annual concert series in Maastricht

Emma Kok, a 15yr Dutch singer suffering from gastroparesis was invited by André Rieu (who was so impressed by her talents) to perform "Voilà" at his annual concert series in Maastricht