The orchestral sound is quite nice! I couldn't help but think about them being like, 'okay, we have 3 seconds to move this xylophone 20 feet back... and now back to the front...' XD. Probably a side effect of how immersive the audio sounds. Perhaps it could have just taken the entire middle section off instead and build up some anticipation for its return.
Clear three sections, like the three panes in the scene. I found it a bit too constrained - by the xylophone in particular. There is a lot of interesting movement by the other instruments though.