I'm just getting back to playing on keyboard. I'm trying to play "Ode to Joy" from the piano sheet but I have a basic question.
At the beginning of some staffs, on the right of the treble clef I can see a key signature with single sharp (#) sign on the upper-F position. From what I understand, that means that I have raise each "F" note half a tone each time I play it. That seems reasonable but in the staffs starting with this key signature I can't find any "F" notes! So what is that sharp symbol for?
Maybe I should modify (play differently) chords too? If so, in what way and which of the chords (or maybe all of them)?