Take Pythonesque cruise with 'Pirates'
One hundred and thirty-two years after W.S. Gilbert and Arthur Sullivan dreamed up a preposterous operetta involving a very modern major-general, his bevy of beautiful, naive daughters and a dutiful young Englishman apprenticed to a band of big-hearted buccaneers headquartered in Cornwall, "The Pirates of Penzance" has become a remarkably pliant concoction. It can be performed with care and affection by light opera c…