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When the EDITOR transposes a tune it will first try and transpose the notes
in the correct direction (either increasing or decreasing the pitch). If this is
not possible because there are notes which would go outside the pitch
range on the VMW then it tries transposing in the other direction. This is
equivalent to transposing and increasing or decreasing the pitch by one
octave. If this is not possible for the same reason that particular key is not
available to be transposed to and it will not be shown in Values.
Transposition is very simple if the music contains no accidentals (sharps
and flats) because the notes are simply moved up or down the staves to the
new positions corresponding to the new key signature. In transposing from
G to B flat for instance, every note on a G line will appear on the B line as
a B flat. Because of the key signature the B note will not require a flat
symbol. However, where a tune contains accidentals, for each accidental in
the original there must be a corresponding one in the transposed version.
Each of these new accidentals will have the same effect as the correspond-
ing one in the original but it will not necessary be the same accidental since
we have to allow for the new key signature. For example, in the key of B flat
a B natural has been raised by one semitone from the given key. If the
music is transposed to the key of G (which includes an F sharp) then the
note will now be a G but its pitch will have to be raised by one semitone. It
therefore becomes a G sharp. The situation can be rather more complicat-
ed in transpositions between certain pairs of keys and can give rise to
double-sharp and/or double-flat symbols in addition to the normal sharps,
flats and naturals. This is in accordance with normal music nomenclature.
Merging music files
The notepad facility allows you to save part or the whole of one voice as a
separate notepad file. These files can then be reloaded and either added to
an existing composition or used to form the basis of a new piece of music.
If you need to add one whole music file on to the end of another try the
following method. Note that the LINKER will already play up to 26 music
files in any sequence.
a) Load 2nd music file (note key signature).
b) Move voice 1 to notepad and save as FILE2A, for instance.
c) Repeat for voices 2 and 3, saving as FILE2B and FILE2C.
d) Load 1st music file and check that key signature is the same
as 2nd file, if not, transpose.
e) Load FILE2A, go to end of voice 1 and access Commands:
Move from notepad
.
g) Similarly for FILE2C.