For the past four or so years now, I have been playing the Viola. Y'all know what that means: Alto clef. Up until just a few weeks ago, I have always seen an F# displayed in a key signature like this:
However, I have noticed in a few Italian pieces I have been practicing lately, that the F# in the key signature, appears like this:
This can also be seen in the Viola part for
The Barber of Seville - Sinfonia by
Rossini published by
Edwin F. Kalmus & Co,. Inc. Music Publishers, which version I couldn't find online.
Does anyone know why the F# in these pieces's key signatures are shown an octave below normal? Is that way technically wrong, or is there no set "correct" method?