Although these concertos were originally published side-by-side with several others, these four have been singled out over time and become a set. In the score, each concerto is accompanied by a poetic sonnet, possibly by the composer himself! But because of the massive amount of anonymous poetry in print from this period, it is likely we will never know for sure. In the parts, specific indications let the performers know what's happening in the "plot." This concerto depicts the dog days with the musical images of stifling heat and sudden thunderstorms.