"Black Sunday" is a song full of sadness written by the Hungarian pianist Rezso Seress in 1933 after the relationship with his girlfriend broke down. It was originally called "Szomorú vasárnap" (Szomorú vasárnap). The English translation of this song is "Gloomy Sunday". At first, the author had some trouble trying to publish the song. One publisher once said: "(Rejection of publication) not because it is a melancholy tune, but because of the soul-stirring despair contained in the piece, which I think would be of no benefit to any listener. " (It is not that the song is sad, there is a sort of terrible compelling despair about it. I don't think it would do anyone any good to hear a song like that.) But after several twists and turns, "Melancholy Sunday" It was finally released in Budapest and within two or three years it became a best-selling song. What no one expected was that after this song spread into the world, it would cause many tragic and bizarre accidents (local newspapers have made extensive reports on related events), just like what the ancient myth describes: Pandora's box once Open it, and countless demons and disasters will be released into the world. However, the last thing to come out of Pandora's box is "hope", which allows this imperfect world to continue; and "Gloomy Sunday" brings people a sound of despair. The song describes an unfortunate man who is unable to bring his loved one back to his side. On a melancholy Sunday, he frequently comes up with the desperate idea of ??committing suicide, and this idea is accompanied by the extreme longing for his lover that is difficult to get rid of. "Gloomy Sunday" spread to the United States around 1936. Its first English version was recorded by jazz artist Paul Robeson in 1940. On August 7, 1941, black female singer Billie Holiday reinterpreted the song in her own unique and superb way, making it a household hit in the United States. Over the years, some incredible reports and rumors have given "Gloomy Sunday" an air of extreme mystery. According to MacDonald's article in the first issue of "Cincinatti Journal of Ceremonial Magick", in February 1936, the Budapest police investigated the suicide of local shoemaker Joseph Keller. They discovered that Keller had left a suicide note in which he transcribed the lyrics to the song, which was just becoming popular at the time. The inclusion of a lyric in a suicide note may not be a bizarre thing in itself, but what is bizarre is that in later years the song was believed to be directly responsible for the deaths of more than 100 people (like "Hundreds of Hungarians Kill Themselves under The Influence of A Song” was an almost exaggerated phrase that once appeared in the headlines of the New York Times). Many suicides are connected to this song in one way or another before they die. In Hungary, two people committed suicide while listening to Gypsies playing the song. In addition, quite a few people went to the Danube River to commit suicide, always holding the sheet music of "Melancholy Sunday" in their hands, including a 14-year-old girl. An old man over 80 hummed this tune and jumped to his death from the seventh floor. According to reports, a gentleman walking out of a nightclub shot himself in the head with a bullet, just after he had asked the band to play "Blue Sunday" for him. There is also a widely circulated report involving the composer Rezso Seress himself.

As the song began to become a hit, Seress reportedly contacted his ex-girlfriend and floated the idea of ??a reunion. Unexpectedly, the girl committed suicide by taking poison the next day. There were two words written on a piece of paper next to her: "Gloomy Sunday". Convinced that this "suicide song" had a disastrous effect on people, the police in Budapest thought it best to ban it.