Among those present was the Viennese Treasury councillor and future prime minister Karl von Zinzendorf, who noted in his diary that "a little boy, said to be only five-and-a-half years old , played the harpsichord".
Entre os presentes encontrábanse o conselleiro do Tesouro vienés e o futuro primeiro ministro Johann Karl conde Zinzendorf, que anotou no seu diario que «un neno, que dixo ter só cinco anos e medio , tocou o clavicordio».