Hey, glad you like the sound and visual effects! The music you heard was done by Slav Simeonov. There is one track for the bear made by Vladislav.
The idea for this transformation of the view is that the consciouness of the shaman leaves the body to travel and then returns to the body by attuning to the heart beats.
Apologies that it doesn't work on mobile. I'm going to fix that in the near future.