About Black Sunday, I experienced it together, more than ten years ago, and I still remember it clearly. This piece of music has psychological implications, but it is not effective for everyone. Only dedicated people are easily influenced by it. Let's talk about the details first: there was no mp3 player at that time, but it was played on cd. One of my roommates worked as a part-time radio host and copied a CD and took it back to the dormitory. He told the story of this piece of music and asked us if we dared to listen to it. One of my roommates said yes, and then he listened with headphones alone, and the rest of us went to bed one by one, without taking it seriously. After a while, I found that the listener had gone out, and the roommate who brought back the music was anxious and went out to look for it. I found the one listening to music in the canteen downstairs. After I came back, I described the process of finding someone: "He ran downstairs and saw his roommate listening to the song standing at the entrance of the canteen with a cd and headphones, intoxicated as if enjoying a wonderful song. He shouted several times, but there was no response. He rushed up and pulled off the headphones and cd, only to find that the cd was no longer there. At this time, the roommate who listened to the song woke up from a dream and asked him why he took off the cd. I haven't heard the song yet. " After listening to the description, we all told the listener not to jump off the building. He also smiled and ignored it, saying that the melody of the song was good. After a while, everyone went to bed and got ready for bed. The real horror is coming. The roommate who listens to this song is usually a night owl. He was energetic at night and dozed off during the day, but he fell asleep soon after returning to the dormitory that day. Just as we were about to fall asleep, my roommate who listened to the song hummed an unknown tune in his sleep, and the melody was clear and smooth. All of a sudden, we all felt cold in our backs and called his name at once, but we couldn't wake up. We continued to hum. The roommate next to him knocked on the bed a few times with his foot before coming over and asking, "What's the matter?" We said, "Are you humming the song you just listened to?" He said, "No? ! I just fell asleep. Why do I seem to be fast today? " Now the whole dormitory can't sleep for fear that something will happen to him. I stayed up all night, and the next morning I sent him to a psychological teacher for counseling. Nothing terrible happened after that.