Control transposition with the Pitch Source parameter in Logic Pro for iPad
In Logic Pro for iPad 2, you can control the transposition of regions and loops in a project using the Pitch Source parameter in the Region inspector. Different region types have different Pitch Source options, including following key signature changes, following the chords on the global Chord track, or following region chords.
The available options in the Pitch Source pop-up menu are:
Off: The region does not respond to the key signature or to chords.
By setting Pitch Source to Off, you can always return the region or loop to the original key in which it was recorded.
Key Signature: The region changes to match the project key and changes with subsequent key signature changes.
Chord Track: The region follows the chords on the Chord track.
Region Chords: The region follows any region chords it contains.
For projects created in earlier versions of Logic Pro, there is an additional option for some region types:
Project Key: The region changes to match the project key, but not subsequent key signature changes.
This option is available for MIDI regions, MIDI Apple Loops, and audio Apple Loops in projects created in earlier versions of Logic Pro when opened in Logic Pro for iPad 2.
Regions
Audio regions have no Pitch Source setting and do not change with the key signature. MIDI regions and pattern regions are set to Off by default, but they can be set to follow key signature changes. Session Player regions can follow either the Chord track or their region chords. When set to Chord Track, they respond to key signature changes.
When the Pitch Source parameter for a Session Player region is set to Chord Track in the Region inspector, the region follows the Chord track; when set to Region Chords, the region follows its region chords. Changing the Pitch Source parameter changes which item is selected in the Chords menu, and vice versa.
Apple Loops
Audio, MIDI, and pattern Apple Loops with a key signature are set to Key Signature by default, while loops with no key signature (drums, percussion, and other non-pitched loops) are set to Off by default. Session Player Apple Loops can be set to follow either their region chords or the Chord track.
When you add an Apple Loop from the Browser, it follows the selected Loop Chords option in the Browser More menu:
Keep Region Chords: The loop follows the region chords it contains.
Replace Global Chords with Region Chords: The region chords contained in the loop are pasted to the Chord track at the position where you drag the loop.
Automatic: If no chords exist on the Chord track at the position where you drag the loop, the chords in the loop are pasted to the Chord track at that position. If chords exist on the Chord track at the position where you drag the loop, the loop follows its region chords (except for Session Player loops, which follow the Chord track).
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