Modern tenor clef transposes incorrect

[benwiggy]

By default, Ottava clefs are cosmetic only, and do not change the pitch of the notes. You can change this in Notation Options, setting the option for Clefs to “Respect the Octave”.

Read the Ballad of the Tenors for further details:

Choir: Odd Tenor playback behavior

Gather round, and I will sing you the Ballad of the Tenors. The early versions of Dorico treated the Tenor as a transposing instrument, like a Contrabass, or a Piccolo – where the octave transposition is implied, but not explicitly stated. (There are, after all, plenty of scores where the Tenor part just has a standard G clef with no 8.) Octave clefs were “cosmetic”, in that they didn’t affect the pitch: that was done in the instrument definition itself. (I believe Sibelius works the same way.…