 On 11 September the family finally reached The Hague.After arriving in The Hague, Nannerl developed a severe cold and was unable to participate in the initial concerts before the Princess during their first week, nor in a performance before the Prince a few days later.Leopold was sufficiently confident of Nannerl's recovery to announce the appearances of both prodigies at a concert to be given at the hall of the Oude Doelen on 30 September.