---------- Forwarded message ---------- > From: Gregrs <[email protected]> > To: Menu Jacques <[email protected]> > Cc: Lilypond-usermailinglist <[email protected]> > Bcc: > Date: Thu, 31 Aug 2017 21:52:00 +0100 > Subject: Re: \transposition question > On Thu, Aug 31, 2017 at 09:50:05PM +0200, Menu Jacques wrote: > > Hello folks, >> >> I’m trying to understand how \transposition works with enharmony. >> >> In the following, what key should be chosen (instead of D major) in the >> fourth score for a soon-to-be-created Trumpet in A#? >> > > For the Trumpet in Bb, the piano's C becomes a written D. The interval > between C and the note in the instrument's name (Bb) is a major second, as > is the interval between the C and the D. > > The same thing happens with the horn; C to Eb is a minor third, and so is > C to A. > > So theoretically in order to write for the trumpet in A# (a diminished > third away from C), I think you'd have to use the key of Ebb major (which > doesn't exist) as this is a diminished third away from C in the opposite > direction. > > Hope that helps! > Greg > > -- > Twitter: @gregrs_uk > PGP key ID: 64907C8A > Fingerprint: EBD1 077F CCDD 841E A505 3FAA D2E8 592E 6490 7C8A >
The transposing interval of an instrument is not a harmonic context. It is not like you are hearing a C against a Bb/A#, and need to determine if the interval is a 2nd or a diminished 3rd. Rather, you are hearing a C against a C, and the rest is mental gymnastics. David Elaine Alt 415 . 341 .4954 "*Confusion is highly underrated*" [email protected] self-immolation.info skype: flaming_hakama Producer ~ Composer ~ Instrumentalist -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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