Par HAENDEL GEORG FRIEDRICH. In the fourth volume of his “General History of Music”, Charles Burney's verdict on Handel's “Giustino” was as enthusiastic as it was prophetic: “Upon the whole, this opera, so seldom acted and so little known, seems to me one of the most agreeable of Handel's dramatic productions”. In it, wondrous things happen: a peasant's son falls asleep while ploughing and is call…