Re: How to transpose a march?
Reply #1 –
G'day Rich,
OK - briefly - there are 2 issues you need to get your head around...
1) In NWC we have an option for "Playback Transposition". This allows NWC to send the right commands to the MIDI synthesizer engine that really only understands "Concert Pitch" in order for it to play the correct notes. This is your foundation if you will...
2) Instruments that are considered "Transposing Instruments" have their music written such that the fundamental notes of the instrument is considered to be a "C". Now, I know that's not very helpful so I'll expand upon it.
A Trumpet is usually a Bb instrument (yes, I know there are C and Eb and D etc. trumpets, but the vast majority are Bb). So, the fundamental note of the trumpet, that is, the lowest unmodified or open note (no valves in use) that the instrument can play is called a "C". However, if you compare the absolute pitch of that note to a piano (which is tuned to concert pitch) then you will find that the trumpet is really playing a "Bb" So the trumpet is considered a Bb instrument.
Now, to make the Bb trumpet SOUND the same pitch as the piano, you must transpose the music the trumpeter is reading. Because "C" is 2 semitones higher than "Bb" you transpose the music UP by 2 semitones. So, if the music was originally written in C, then the trumpet version must be written in D.
Contrariwise, to convert a trumpet part to concert, you transpose it DOWN 2 semitones, so if the trumpet part was in "C", then to put it into concert you must lower everything by 2 semitones - to the key of "Bb". See the connection?
OK, to convert an Eb part to concert, you must lower it a major 6th or 9 semitones. E.G. if the Eb part is in "D", then the concert part would be in "F"
I hope this is a bit clearer - it's hard to get your head around unless you use it...
OK, this is where point 1) above comes in. If you write a part for an Eb instrument in NWC, in order for it to play back using the correct pitches, you need to correct the "playback transposition" by LOWERING it by 9 semitones.
N.B. You MAY need to take into account octave shifts too. E.G. A Baritone sax is really 21 semitones lower than written, not 9 'cos it sounds 9 semitones PLUS an octave (another 12 semitones) lower than written.
The best way to start your project is to get everything into concert pitch first. So, ALL Bb instruments go down 2 semitones, all Eb instruments go down 9 semitones, all F instruments go down 7 semitones and C instruments remain unchanged.
Using NWC, notate as written in your source charts WITHOUT worrying about playback transpositions, then use NWC to transpose according to the right number of semitones while having the "Update Staff playback transposition" UNCHECKED.
The piece will now play back correctly in concert pitch.
From there I'm sure you'll be able to find your way...