First 15-16minutes of Metz 2010 recording

First of all I have tried to find it [the topic/question] on the forum, but failed.

I'm now listening to Metz 2010, and it starts with this gorgious 15-16minutes of classic + some eletronic elements. Do we know if this was Richard? Or just someone else, but just happened to be recorded?

I talked to a guy who uploaded a video of this performance on Youtube and he wasn't entirely sure it was Aphex Twin, but I am only referring to the strings part that is playing during the fireworks. I think that specific part was him because he goes straight into Rhubarb in reverse afterwards and it is synchronized with the fireworks.