Adagio in D Minor by Samuel Barber is often regarded as one of the saddest classical pieces due to its melancholic melody and harmonies. It is a funereal piece and has been performed at many somber events. The work has been used in movies that involve tragic scenes and death, such as Platoon and The Elephant Man. It has also been featured in many other media forms, such as commercials, anime, and computer games, to convey a sense of sadness and tragedy. This piece, when compared to other classical works, stands out for its ability to express deep sadness and melancholy, which is why it is considered one of the saddest classical songs.