well... first off, the theme is obviously a man in a well. we dont know why but he is in that well. that man eats, sleeps, and dreams about this random well that he is in because he is in it. he only know the well. as far as hes concerned, he is that well and will always be that well.
i did the best i could with the info i had
Patter song is characterized by fast or very fast tempo. it's a comic song which depends on its rapid expression of words. most commonly it occurs in an Operetta. so the answer to your question is Operetta.
