Quote Originally Posted by Jon View Post
Having a poke around Google, and it looks like Yo-Yo Ma could be involved as well.
Double post for clarity:

Yo-Yo Ma will be performing as part of The Silk Road Ensemble for this (I'm a nerd)! The ensemble is always evolving and can be rather large.

Found information here:

Yo-Yo Ma recently took an interest in Võ’s explorations as well, resulting in her performing with his Silk Road Ensemble on the soundtrack for The Vietnam War, Ken Burns’ forthcoming documentary.