Apple Logic Pro X - Manual (Page 599)

Chapter 19 Make global changes to a project 599
Work with transposition
Transposition overview
When Show Advanced Tools is selected in the Advanced preferences pane, you can you can
transpose (change the playback pitch of) MIDI regions and Apple Loops in a project over time
using the Transposition track. The Transposition track contains control points for pitch changes
(transposition events). The project transposes at the position of the control point, and remains at
the new transposition value until the next control point.
Transposition affects both audio and software instrument Apple Loops (except drum loops, and
other Apple Loops with no defined key) as well as MIDI regions. Audio regions other than audio
Apple Loops are not transposed.
The zero position of the Transposition track is determined by the current key signature in
the Signature track. If the key signature changes during a project, the zero position of the
Transposition track changes accordingly.
Transposition works nondestructively, and transposed MIDI notes return to their original values
when the Transposition value is reset to zero (0). For example, starting with a C3 note event
in a MIDI region, adding a control point with a value of +2 changes the note event to a D3. If
you change the control point to a different value, the note is transposed by the corresponding
amount. When you change the control point so that the transposition value = 0, the note returns
to a C3. Similarly, if you copy a region to different parts of the project with different transposition
values, the notes in the region change by the corresponding amount.
When you add or edit a transposition control point, only existing MIDI events in a project are
transposed. MIDI events recorded or created afterward are not affected.
If the No Transpose checkbox is selected in the Track inspector, MIDI events (including instrument
Apple Loops) are not transposed for that track.