At just fifteen years old, Sir Paul joined what would become the most famous musical quartet in history. Of course he was going to party it up! McCartney admits he had a lot of fun on the road with the Beatles, and wasn't a stranger to alcohol. But now, almost 60 years later, Paul's pre-show diet is just a little different. Instead of a drink to calm his nerves, Paul downs a handful of cashews and chocolate raisins. He has to get that stage energy from somewhere. And he says these days he is too nervous to drink before a show, in fear he will forget his own lyrics.