To get to the bottom of the matter, we first need to know the possibility of music killing.

We all agreed that it was because of the emotional rendering of the music that the negative emotions of Ning Xiaobai, who was already suffering from serious mental illness and mental illness, were infinitely amplified, resulting in suicide.

And the song "Black Sunday" itself, the music is very depressing, and a lot of discordant tones are used in it, and the high-bass conversion is particularly powerful. This is the same principle as horror films, using a lot of high-bass and bass transitions to create a terrifying atmosphere and make people feel nervous.

In addition, because the author's mood was very painful when he wrote the song, a lot of negative words were added to the lyrics. Combined with the whole discordant music, it becomes a death music.

In addition, the social environment at that time was complicated, and the suicide rate was already very high, because the background at that time was the Great Depression, the economic crisis swept the world, many people lost their jobs, worried about food and drink every day, and huge stress was also the cause of suicide.

It's like why people often commit suicide in the subway of the island country, because the subway produces the same frequency of noise during operation, which is also a discordant note, which can make people feel uneasy. Coupled with the high pressure of the social environment and the sense of oppression that is overcrowded in the subway, it will make people feel stressed, leading to psychological loss of control and choosing suicide.

"It seems that this is indeed a suicide case...... Lin Zifan muttered.

As soon as he finished speaking, he suddenly frowned and asked a question: "No, these scores were in the bookcase at the time, and she didn't play them." And Ning Xiaobai's personal trainer Zhang Yajing said that she is a beginner with no talent, how can she play this kind of music? ”

"Could there be any other trigger?"

At this moment, Xiao Xuan of the Technical Investigation Department brought us a piece of news, the Technical Investigation Department successfully cracked Ning Xiaobai's mobile phone, and then found an audio in Ning Xiaobai's mobile phone. According to the system function of the mobile phone, Ning Xiaobai's mobile phone was playing this song at the time of the crime.

And this audio has a name - "Black Sunday".

In the Crime Squad office, we sat in a circle, with a laptop on the desk in front of us.

Although none of us believe in this evil thing, there is still an inexplicable fear.

"It's okay, we have a psychology expert who can cure you even if you want to commit suicide." I smiled and said casually.

As soon as my words fell, Jiang Tingbai immediately let out a painful moan. Yin, nested in the chair and kept twitching: "Sister Li Meng, I'm sick, you can treat me quickly." ”

"No need to cure it, just starve you for two meals." Li Meng gave him an angry look.

I took my nerve and tapped the space bar on my computer, and then a piano sounded......

This audio is forty-seven minutes long, which is about the length of a TV series.

The piano sound is very melodious, but then there is a long heavy bass, and as it is said on the Internet, the song is very dissonant.

"It's really ugly."

The five of us frowned and uttered the same complaint.

"If I were to listen to the full forty-seven minutes of such a terrible tune, I would have to kill myself." Jiang Tingbai took a deep breath and showed a very serious helplessness.

But in order to find out what the magic of this audio is, all of us are determined to listen to it for twenty minutes, and then we can't listen to it.

It's not that we're afraid of suicide, or because of how scary the song is, but for one reason, it's just that it's so bad.

Then, we turned on the quadruple speed and listened to the rest.

"It's really ugly!" Li Meng let out a long sigh of relief, revealing a relieved expression.

"Although there is no feeling of suicidal thinking, if a person with mental illness listens to this forty-seven-minute song, it does become irritable." Xue Hang behaved relatively calmly and said in a deep voice.

"Now there are two questions, first: when Ning Xiaobai committed suicide, did he listen to this song. Second: Where did this 47-minute piano piece come from? Lin Zifan asked a very critical question.

"The source of this piano song, the Technical Investigation Department is still investigating based on Ning Xiaobai's mobile phone and computer, but one thing is for sure, this song was not downloaded from the Internet. The Technical Investigation Section has been compared and found no songs of the same 47 minutes on the Internet, and there is no trace of editing and splicing. I calmed down and said in a deep voice.

This incident can't help but remind us of the death game that originated in Russia - the Blue Whale.

It is the game organization that makes immature teenagers commit suicide through various hints and inducements.

So could this "Black Sunday" be a remake of the Blue Whale game?

This is definitely a key one that needs to be further investigated.

But at the same time, I was going to talk to Zhang Yajing, a key figure in the case, not only because she was suspected of committing a crime, but also because she was a piano expert, and maybe she could find some clues in this 47-minute piano piece.

The detailed autopsy results have not yet come out, and everyone continues to investigate Ning Xiaobai's social relationships and investigate as many clues as possible about Ning Xiaobai.

Li Meng and I took this audio to Zhang Yajing's residence.

Zhang Yajing only has one class of Ning Xiaobai today, and when we arrived, Zhang Yajing had just had dinner and happened to be at home.

Zhang Yajing lives alone, and as soon as she enters the door, she can smell a charming fragrance, and the room is full of literary and artistic atmosphere.

Zhang Yajing, who was wearing home clothes, was even more gentle, could such a weak girl really be an accomplice to Ning Xiaobai's suicide?

We have already communicated with Zhang Yajing in advance, so Zhang Yajing knows our intentions.

After I handed the USB flash drive in my hand to Zhang Yajing, Zhang Yajing began to play this forty-seven-minute audio.

As a musician, Zhang Yajing has naturally heard the legend about the song "Black Sunday", and she said that she had searched and heard this song on the Internet before, and she didn't feel anything. And Zhang Yajing also mentioned that the original version of this song cannot be searched, and each adapted version has adjusted the original chaotic high and low notes in the music, so it is not as disobedient as imagined.

However, the audio we brought was something Zhang Yajing had never heard before, and it seemed to be a brand new version.

And Zhang Yajing said that there is a piece of music in it, which seems a little strange......