LyricWulf plays a lovely rendition of Krystal's theme from Star Fox Command on piano. LyricWulf does a lot of piano covers for different games, check out his channel. On LyricWulf's site, he may eventually post the downloadable sheet music for this song (not yet available at time of writing). The background image is by JECBrush.
Thanks to LMAdv from last night's chat for making me aware of this piece.