Woah, this is mindbendingly nifty and cool.  A 3 sided piano!  Sort of… check this out, it’s a 360 video, so you can use your finger/mouse to move the view around, or move your phone (or if you’re in a VR rig, just look around):

A wonderful blend of planning and choreography coupled with musical and mathematical harmonies to create spiraling cycles of music and people and  time.   The making-of video is equally fascinating to watch:

Very cool stuff.  Love the creativity and technical oomph that brought it all together!