Re: Smart transpose

[David Raleigh Arnold]

Laurent Martelli wrote:

> Lilypond has command (\transpose) to transpose music in other keys, so
> that you can easily print the music for a Bb trumpet if you typed in
> C, or any other key.
> 
> The problem with it, is that an accidental (# or b) in the original
> key may result in a double accidental in the transposed key.
> 
> For instance, a #A in the key of C, when transposed in the key of E
> will result in a ##C, which should rather be printed as a D.
> 
No. It must be xC. The only exception is the dim7 chord. :-)

.daveA