I recently bought a piano for learning (by myself at the moment) and apart from doing basic exercises, I decided to start learning a piece to get a grip on music sheet reading as I go.
On the sheet I'm trying to play there are 2 sharp key signatures at the start of the line: higher C and higher F (pardon me if terms are not accurate). What caught my attention is that in this piece at higher octave C and F do not sound right without a sharp.
With that in mind, I am wondering if tonal signatures are specific to octave they are written on. For instance, in my case if higher C and F have sharp signatures, would every C and F in the section be a sharp or just the ones on the lines sharp signatures are written on?
Sheet I am trying to play in case my descriptions are hard to read.