Journeys through Spacetime

Relevant part:

My dream guide calls me and takes me to the interior a large white cube. He reprimand me and suggests I try my synesthesia exercises. There is a liquid mirror surface, which I can manipulate. I use visual manipulation along with auditory to produce magic!
At first I produce a surreal forest, and I receive beautiful orchestral music with tasteful hints of trumpets.
I now jump in and find myself in a forest, which seems to be quite alien indeed...