Originally Posted by: Jolly McJollysonNow, I hate to nitpick, but since he doesn't play any E chords, I think we can safely call it C#minor.

I guess when I look at music charts, I see the sharps or flats and I determine the parent major key from those sharps/flats. Also, saying that this piece is in Emajor sort of solidifies the main scale to use for this piece, which would be C# Aeolian, rather than dorian or another minor scale such as the harmonic minor.