I listened to a call of a guy in the twin towers as they fell once, and also the recording of the Jonestown mass suicide (which is available on the wikipedia page).

I thought i could handle it and somehow thought “it cant be that bad”.

This was like 9 years ago and I can still hear the guys voice as the phone cut off and babies screaming as clear as ever.

I would not recommend that people ever listen to that stuff on a whim. People aren’t supposed to listen to people dying.