Some examples of the Reception of Ovid's Heroides

Boccaccio's Elegia di madonna Fiammeta
Diego de San Pedro: Carcel de Armor (1492)

And don't know whether these soliloquies of love can be considered to be the continuation of the same tradition too, for example:
Franz Schubert: Gretchen am Spinnrad (from Goethe's Faust I) (the video is too sentimental for my taste, but the interpretation is the best I can find in web).