[Ball] at the [Austrian] Embassy
London: [Austrian] Embassy
Philipp von Neumann: In the midst of some fatiguing weeks of “balls without end,” Neumann is delighted on the 15th to hear “a great artist on the piano, Moscheles, play at the Embassy, who astonished us not only by his extraordinary talent but by his exquisite taste and the novelty of his style of execution.
[Phillip von Neumann, The Diary of Philipp von Neumann, 1819 to 1850, trans. Chancellor Edwin Beresford, vol. 1, 2 vols (London: P. Allan & Company Limited, 1928), 62-63.]
Ignaz Moscheles' Concert Life 