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Special uses of invisbar
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Special uses of invisbar
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The "invisbar" can be used
to force Mup into
doing something in the middle of a bar that it normally would allow
to happen only at a bar line.
Suppose, for example, you wish to place a
<A HREF="bars.html#reh">rehearsal letter</A>
in the middle of a measure. This could be accomplished as follows:
<BR><PRE>
// assume we are in 4/4 time, but want
// a rehearsal letter by count 3
// of the measure
// do first part of measure and use "space"
// for last part so time values will add up
// properly to a full measure
1: 4c;d;2s;
// put in invisible bar with rehearsal letter
invisbar rehearsal let
// now do the last half of the measure,
// this time with space at the beginning
1: 2s;4e;c;
bar
</PRE><BR>
<IMG SRC="mugex102.gif" ALT="Picture of Mup output"><BR>
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As another example of invisbar use, suppose you want to add a "courtesy"
key signature at the end of a repeated section to remind the player that the
beginning of the repeated section is in a different key. This can be done
by adding an empty measure whose sole purpose is to produce this key signature.
<BR><PRE>
score key=3&
music
1: g;f;e;d;
repeatstart
1: c;e;f;g;
dblbar
score key=0&
music
1: g;f;e;d;
bar ending "1."
1: f;e;2c;
// add a courtesy key signature,
// to remind player the beginning
// of the repeated section is in
// a different key
invisbar
score key=3&
music
1: ms;
repeatend ending "2."
1: e;d;2c;
endbar
</PRE><BR>
<IMG SRC="mugex103.gif" ALT="Picture of Mup output"><BR>
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<P>
You can use a similar technique to insert time signatures, clefs, etc.
at unusual places.
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