Apple Logic Pro 9 - Manual (Page 980)

Note: As always, rests are displayed automatically in Logic Pro, as per the Rest settings
in the staff style. Given the cross staff beaming situation described above, however, most
(or all) notes belong to the voice of the top staff, and the lower staff will contain
rests—some even at positions occupied by notes. To avoid this potential issue, use a staff
style where the automatic rest display is deactivated for the bottom staff’s voice. Wherever
rest display is desired, insert it or them from the Part box, with the mouse.
Using Drum Notation with Mapped Staff Styles
In MIDI regions that are assigned to drum instruments, each MIDI note usually triggers a
different sound. If such MIDI regions are displayed with a regular staff style, you see notes
with no apparent relationships to the sounds represented by them.
If you want to notate these musically meaningless pitches as a readable drum part—which
uses special percussion note heads—you should use mapped instruments and mapped
staff styles.
Mapped staff styles allow you to assign individual voices to drum groups. Drum groups
use specific drum notation head shapes to display note events. You can define the
respective drum note head shapes in a Mapped Instrument window.
The best way to create drum notation for an existing MIDI region is to open the Score
Editor (to display the MIDI region), the Mapped Instrument window, and the Staff Style
window. This way, you can directly see how parameter changes affect the score display.
980 Chapter 31 Working with Notation