IN any Selection from Rigoletto we are sure to find two or three tunes that. as soon as the work was produced (in Venice, three-quarters of a century ago), were whistled all through the city. We shall almost certainly hear the Duke's gay song about women, Quesla o o quella, telling how one is as good as another to him; his uncomplimentary ballad, La donna é mobile—Woman is fickle, and the ecstatic Caro nome, the love song of Gilda, the heroine, when she calls upon the ' dear name ' of her lover (the Duke, who has pretended to be a poor student). The detached, descending notes at the opening of this song make it easy to identify.