Can anyone tell me the name and key of the Japanese flute that was used in the last samurai in this video?

Question:

I was guessing that it was either a Shakuhachi or a Shinobue but I want to be sure so please an expert of or someone that knows a lot about this what type of Japanese flute is that playing at the beginning of 4:03 to 4:28 and what key is it in? thank you

here is the link to the video: http://www.youtube.com/watch?v=PA7Xz2JB_kk

Answer:

Sounds vaguely like a shakuhachi to me too, but the sample is too short to tell for sure.