[kaehurowing]

Google YouTube something like heavenly trumpets, or unexplained noises from sky, you wil find dozens and dozens of videos.

Here’s one sample:
https://www.youtube.com/watch?v=-dIG3sWhyuc

https://www.youtube.com/watch?v=wCt4KVUPpXA

https://www.youtube.com/watch?v=unZvX5HHMNc

https://www.youtube.com/watch?v=tt0lc8skIN4

https://www.youtube.com/watch?v=Zlj5tw7l5u8

https://www.youtube.com/watch?v=RBvEllGIoL4

[CTyank]

I’d read somewhere that those videos were faked and the soundl was lifted from some video game.

[a fool in paradise]

I’ve heard those once. I am miles from any train crossing and they aren’t supposed to use the horn in ‘that area’ (residential) anyhow.

I have to have my windows open to hear such things. Too cold now.

[nanetteclaret]

I finally had time to listen to your post. The sound was similar, but different. The 3 tones were in succession, one after the other, about 2 seconds each, over and over for about 45 minutes.

[antidemoncrat]

In videos 2 and 3 there is a circular cloud formation...very strange.