In Unreal Engine, I was able to tweak the BP_Sky_Sphere colors to give my scene a red glow. I then created a Material by importing a PNG image of the root chakra symbol, and applied that Material to a flattened Cylinder to form the disc that appears below the tree roots.
For the music, I wanted to insert some placeholder music for now, so I selected this “Relaxing Traditional Music of West Java” that I converted to a WAV file from this Youtube video. Soon I hope to work with a local musician to use original gamalan (traditional Javanese) music instead. I watched this tutorial on how to insert background music.
Now when you hit Play, the background music plays in the scene.