Also, the concert is the cooperation of the two rather different artists, father and son, which resulted in a piece composed as a joint work for string-quartet and synthesizer called the Zwiegespräch. This is how Kurtag Jr. reflected upon the birth of this piece in 2007:

While working on it, I realised how differently my father and I think. The fact that we do not hear the same thing initially caused misunderstandings, but when we realised it, we were able to ask one another: what do you hear?
It is impossible to unravel who has done what in this piece, which changes from performance to performance: today there isn’t one note in common with those played at the first concert. We have been working on it for eight years, and perhaps we will never finish. The aim is, after all, to continue the dialogue between us.

At the Budapest concert there is another composer joining the Kurtágs, so the Games – originally composed for piano - and the Zwiegespräch will be performed by a chamber orchestra in the instrumentation of Olivier Cuendet, the Art Director of Ensemble Babel.