in that there is a another theme besides the grief one there is one where it has a guitar and flute does anybody know the name of it if so i would like to request it for piano

I believe you may be talking about Sadness and Sorrow. At least, that's the only sad song from Naruto that is popping in my head when I think flute and guitar.

If so, you can find that right here at Ichigo's: http://ichigos.com/sheets/n