Re: wrong transposition of horn

[D Josiah Boothby]

> Lilypond shall handle this automatically.  Additionally, the clef
> changes in a horn part are normally different from the clef changes in
> the full score.  See the attached image.

...

> But in guitar scores you always use treble clef, right?  Here another
> example: Take the pocket score of `Ein deutsches Requiem' (Brahms,
> Edition Eulenburg) and look at page 2, bar 12/13: The horn part in F
> is notated as

You are correct in noting that this usage of bass clef for the horn had 
its place when Brahms was composing for the horn. This was useful for a 
three octave range (sometimes three and a half, if your fourth hornist had 
good note-bending skills).

Technological advances to the instrument (namely valves) have rendered 
this habit of transposing the bass clef differently than the treble clef 
useless. Most 20th century composers dropped this habit though 
unfortunately also dropping the habit of removing key signatures from the 
horn parts... this has accounted for no end of pain in the horn section!

I can still see no reason why this should be automatic, unless there was a 
pre-set transposition style such as oldHorn or some such.

Josiah