Question

Why when saying “the piano” in French do you say “du piano” and not “au piano”?
GPT 3.5
In French, the preposition "du" is used to indicate possession or association with a particular object. Therefore, when saying "du piano," it is emphasizing that the piano belongs to someone or is associated with someone. On the other hand, "au piano" would be used to indicate location or direction towards a piano, which is not the intended meaning in this context.