Unique Basalt Delta Music

I'm OK with the fact that So Below is used in the Basalt Delta as well as the Soul Sand Valley (And with the Warped Forests supposed to feel mysterious with no music but lots of ambience), but it feels like the Basalt Deltas have a chance of having their own song, and this could give Lena Raine another chance to make a track. I just think this would be awesome.