Apple Logic Pro 9 - Manual (Page 943)

To view the Signature List
Do one of the following:
µ
Choose Options > Open Signature List.
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Shift-double-click in the Signature track.
The Signature List displays time and key signatures in a list style editor, along with other
global score symbols such as repeat signs, double bar lines, and so on.
Time Signatures
A time signature determines the number of beats in a bar (shown in the Bar ruler), thus
defining the editing grid in the Arrange area and MIDI editors. A time signature does not
affect the playback of audio or MIDI regions.
Time signatures do, however, affect the score display. All functions that rely on the chosen
time signature and bar positions (such as MIDI metronome click or Transform window
functions) are affected if bar positions are used to restrict a function to a certain part of
the project.
Key Signatures
Key signature changes only affect the display of MIDI notes in the Score Editor—they do
not have an effect on MIDI playback. The first key signature, however, affects the playback
of audio Apple Loops. For more information, see
Using Global Tracks with Apple Loops .
You can create as many key signatures as you like. If your project already contains other
key signature changes, any newly inserted key signature changes the key from the insertion
point forward, until the next key signature change is reached.
You can store up to nine signature alternatives, which are reflected in the Signature track,
Signature List, and Signature window.
Creating Time Signatures
You can create as many time signatures as needed in a project.
To create a time signature
Do one of the following:
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Move the playhead to the target bar, and set the new time signature in the Transport
bar.
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In the Score Editor, drag the time signature from the Part box to the target bar position.
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Set the Signature track to a sufficient height, so that it displays both the key and time
signature areas. Click the target bar in the Signature track’s time signature area with the
Pencil tool, then choose your settings in the Time Signature dialog.
943 Chapter 31 Working with Notation