Some of the Dark Ambient music you will find on Youtube is extraordinarily beautiful.
Especially this one by Adrian von Ziegler.
Path of Darkness
Source: https://www.youtube.com/channel/UCSeJA6az0GrNM4_-pl3HQSQ
This is a Gothic Ambient Song, which is meant as Mood/Background Music.
It's an old Song and is awesome to play loudly on Halloween.
this song is intense and has energy good choice greetings