I've been playing French Horn for 20 years, and thought I had most basic concepts regarding accidentals understood. But the other day I came across the following image via Wikipedia, which had me questioning what I thought I knew:
I see octave jumps quite often in the pieces that I play, and sometimes they have the lower note with an accidental, as the image illustrates.
However, I've always thought that an accidental on a lower octave would also be applied to the upper octave.
I don't recall any strange dissonance when playing it that way, though.
Is the wiki page correct? Have I been playing them wrong all of these years?