...Sean M. Parr A vogue for coloratura dance arias began in the 1850s. This emerging genre combined melismatic singing with two hugely popular social dance genres: the bolero and the waltz. Scholars have observed an association between these social dances and a certain euphoric feminine sensuality...

... persona in whose mind the music continues to unfold even as that persona brings the premises of the genre under scrutiny. In the Waltz in A♭, op. 42, for instance, a momentary interruption of the waltz beat, like the terminal interruption of the nocturne texture in the Nocturne in B, op. 32, no. 1...