A Fledermaus worth seeing for all its inadequacies

Johann Strauss’s Die Fledermaus (but if it’s given in English, why not The Bat? Does that somehow sound too unglamorous?) is not only the greatest operetta ever composed, as everyone agrees, but also, in my view, a great work, to be ranked with the finest comedies in any genre. That is, beneath its featherbrained hedonism there is a core of seriousness, conveyed as usual by Strauss in glittering music that never lets you forget that all good things come to an end, usually sooner than you expect. But that is only part of its claim to an exalted status that the term ‘operetta’ seems to deny. As in many great comedies, several of the characters spend much of the time in disguise, and sing some of their most telling music when they are pretending to be someone else. The climax of that is Rosalinde’s Czardas, a plangent piece that expresses as well as anything nostalgia for a homeland which in her case she has probably never even visited, before going off giddily into cascades of coloratura.