I was there that night in Rotterdam, 16 years old, together with some friends from school. We were waiting outside when suddenly the doors went open. We ran inside and heard the doors being closed behind our back. It seems that someone had opened the doors too early. We went through some more doors without being stopped and suddenly... we were standing in front of the stage where Led Zeppelin was doing a soundcheck. It was like we were dreaming. After a few exciting minutes however we were noticed by the security and they took us outside. We looked at each other and couldn't believe what we had just seen. All I can remember from the concert itself, was that the sound was not as good as it was during the soundcheck. It was a memorable evening.