For many it was a throwback to years gone by, for others it was simply the best atmosphere they've ever encountered at Hillsborough.
As Sheffield Wednesday beat Brighton 2-0 in the Championship promotion play-off semi-final to take a step closer to Wembley, the incredible noise bellowed around the city.
Tom Lees admitted afterwards: "It was absolutely unreal. It was the best atmosphere I've played in by a country mile. The lads were saying afterwards when all the lights when on (the fans) phones, all round the stadium, it gave us goosebumps."
The lights, coming from the fans' mobile phones, appeared to be a spontaneous act, which quickly spread around the stadium, creating a stunning scene and at times the stadium literally shook as supporters bounced and sang with a passion not seen at S6 for a very long time.
Watch the video to get a sample of what it was like on Friday night