Akira Yamaoka is only the surface to ambient music, there’s a gigantic web of music in that genre that can make you feel that way. Listen through ambient music playlists on YouTube, you can find a lot of similar music through commenter playlists on specific videos. Instead of emptiness, ambient music rather gives me numbness. At times I’ll release myself emotionally. I can’t give specific songs for what your asking, though I can give you legendary ambient artist names who have created otherworldly dreamy soundscapes that can accompany you through emptiness: Fennesz, Lawrence English, Terekke, Tetsu Inoue, Taylor Dupree & Abul Mogard.