I have a score of a symphony in D minor. Some strange transposing.
Flutes: key D minor/one b - as normal
Oboes: key D minor/one b - as normal
English Horn: key C/nothing
Clarinets Bb: key G/one #
Horns in Fa: key C/nothing
even Timpani is transposed into C/no sharp/flat symbols
Why is that? Reasons? It contradicts the normal transposing rules.