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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
rehearsal letter
in the middle of a measure. This could be accomplished as follows:
// 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
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.
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
You can use a similar technique to insert time signatures, clefs, etc. at unusual places.