Posted on YouTube by M. Bonnemayers.
  Maestro Rieu plays Adagio from concerto nr 3 in G, Kv 216, with pianist/composer Mauritius 
  Bonnemayers, playing on the right piano. On the left piano you see Maestro Roger Moens, my teacher. 
  He is a pupil of a pupil of a pupil of a pupil Franz Liszt. We all come from the city of Maastricht in the 
  Netherlands.