I saw the concert, went there from Poznan. I expected both a musical and a kind of patriotic event. to tell you the truth, I'm a bit disappoited with his performance. I like his greatest hits but some other pieces sounded boring and unimaginative (the same effects, same rhythm, too little dynamic for me). The fireworks were great , I had never seen such a show before, but the lasres - nothing special.
I also counted on some kind of solemn atmosphere, expected the people to sing "Mury" (The Walls") by Jacek Kaczmarski or even the national anthem, but it wasn't that way. What a pity. I guess JM Jarre didn't try hard enough to give us something special.