- Messages
- 8,155
- Locality
- Bristol, UK
I think you should definitely write B# rather than C natural, since this is the leading note in the key of C#.
For the D, I would have thought that both C## and D natural are OK, but I could accept an argument that in a sharp key you should get the in-between notes by sharpening the note underneath rather than flattening the one above.
Imagine a 5-note chromatic scale starting on C
We could write it as C, C#, D, D#, E or we could write C, Db, D, Eb, E
The first would feel more right to me in a sharp key and the second in a flat key.
For the D, I would have thought that both C## and D natural are OK, but I could accept an argument that in a sharp key you should get the in-between notes by sharpening the note underneath rather than flattening the one above.
Imagine a 5-note chromatic scale starting on C
We could write it as C, C#, D, D#, E or we could write C, Db, D, Eb, E
The first would feel more right to me in a sharp key and the second in a flat key.