An Unclear Piece of Music (Happy and Sad Simultaneously).

This is a simple piece of classical music that is written for a string quartet plus accompaniment from a grand piano. It is very ambiguous in terms of the feeling that it is trying to convey. It starts off very depressing, with the lower strings playing the same note for a long time. Then, the key changes from D minor to F major, making the piece sound happy and lazy. Then, the piece ends on a cliffhanger, making you wonder what will happen next. Overall, the piece is very unclear to define.