Re: question on \transpose

[Tim McNamara]

On Nov 21, 2010, at 12:41 PM, MING TSANG wrote:

> Yes, (1) \transpose f des {music} works.  I use english.ly so (2)  
> \transpose f dflat {music} also works.  I was told D-flat is  
> equivalent to B-flat minor; but in term of key signature print D- 
> flat has 5 flats while B-flat minor has 5 sharps.   On score sheet  
> D-flat show 5 flats.  How can I produce lilypond score sheet with 5  
> sharps for B-flat minor?

Bb minor would have 5 flats; it is the relative minor of Db.  Five  
sharps would be B major or G# minor.  If you want to transpose your  
score to five sharps, then your \transpose command would be  
accordingly different:

     \transpose f b {music}


Relative minor keys are as follows:

C = A minor = no sharps
G = E minor  = #
D = B minor  = ##
A = F# minor = ###
E = C# minor = ####
B = G# minor = #####
F# = D# minor = ######
C# = A# minor = #######

C = A minor  = no flats
F = D minor = b
Bb = G minor = bb
Eb = C minor = bbb
Ab = F minor = bbbb
Db = Bb minor = bbbbb
Gb = Eb minor = bbbbbb
Cb = Ab minor = bbbbbbb

A nice graphical representation:

http://allenibmusic.org/?p=366