The fellas & the ladies in London did a less than stellar job of singing Nah Nah, Nah Nah, Nah...when individual audience participation was requested by Paul IMO. Who doesn't know the chorus to Hey Jude? Maybe everyone was was tired at that point I suppose.
My favorite part was all the pyrotechnic fireworks going off in sync. All that vivid color in unison was pretty to watch. It reminded me of fireworks in Australia going off near the Opera House at the start of the new Millennium & 21st Century.