I have run across this before and don't understand, but I think I may be able to at least explain my confusion now.

I was looking at the G major scale and noted the f#"s. I can play that ok. In a book of beginner songs I am seeing songs in the G major key signature. However these basic songs do not have any f# notes.

My question: why does the song have a G major key when it plays the same as a C major key? I hope that made sense!

Thanks, MikeB