National because it refers to an entire country
Among Beethoven's piano sonatas, one would consider the Pathétique, Moonlight, Waldstein and Appassionata to be the most famous.
Explanation:
Typically, above-the-line refers to producers, directors, writers, cast (including name actors/movie stars, etc.), and stunt cast/personnel. ... “Below the line” then refers to everything and everybody and every expense that isn't considered Above the Line. More simply, imagine a line drawn in on a budget page.
The closest thing that I can say among all of these answers would be improvisation. The definition of improvising is adapting to the situation in a better manner appropriately. So let's say when a musician is already on stage and makes a mistake while playing the guitar, he has to improvise a bit so that his mistake will not look like one. He is spontaneously creating something while he is on the spot. In a sense, he is improvising his original work and making something somewhat different.