Halo, it may be duplicate of other questions with the same titles. But I don't find answers I'm looking for in those...
I'm quite new to music sheet, but I can basically read notes already after some time...
There is one part that is confusing me: when the lower (bass) clef is changed to trebel clef in the middle of music sheet.
Because from this music sheet
When I see the piano keyboard demonstration, I find that the f (and other) notes from each clef are not in the same octave.
So the lowest visible line on upper treble clef is e5, and the lowest visible line on lower treble clef is e4?
Is it always so by default? Or not? Or there is something I miss from reading that sheet?