"Facing twenty thousand of your friends
How can anyone be so lonely
Part of a success that never ends
...
There are moments when I think I'm going crazy."
#SuperTrouper
By the time The Beatles played their iconic gig at Shea Stadium, these lyrics would have probably felt all too familiar. Their American tour made memories of a lifetime for a generation of fans, but it also put a lot of stress on the four young boys from Liverpool.