It wasn't Quattro Pezzi, but it was musically along the same lines. I can't remember the name of the piece and didn't keep the program. It was great though. All strings. The same night, a particularly dissonant piece by Pärt was performed, which involved performers walking around the crowd. That poor crowd of old folks didn't know what was coming.
Speaking of which, that was one of the cool aspects of the Eötvös's Seven that I saw. It was something like a violin concerto, but there were four violinists divided strategically in the gallery who played a bit of call and response with the soloist. Already mentioned this before, but I get a sick satisfaction out of seeing other people in the crowd twist in their seats awkwardly, waiting for such music to end, after having just been serenaded by a Bach Cantata.