Something for the weekend: A New Argentina by the original Broadway cast of Evita. Patti Lupone in the title role is the essence of explosive energy. I have always loved this musical. It is a superb cautionary tale about what can happen to a nation when an economically illiterate leader is elected on a popular frenzy of adulation. Peronism has been a plague on the politics of Argentina ever since. Perhaps too high a price to pay for a nation to provide fodder for a musical.