Apple GarageBand '09 - Manual (Page 85)

Chapter 8 Tutorial 6: Arranging and Editing Your Music 85
Try looping the drum and bass regions you added to the timeline. Rhythm patterns in
most popular music last for some multiple of four measures. For example, the verses
and choruses of many popular songs often last for 16 or 32 measures each.
Splitting and Joining Regions
You can split a region in the timeline. Splitting a region lets you start playing the
region from a point other than the beginning, or use parts of a region in different
places in the timeline.
1 Select the region you want to split.
2 Move the playhead over the point in the region where you want to split it.
3 Choose Edit > Split.
The selected region is split into two regions at the playhead. Only the selected region is
split, even if regions in other tracks are under the playhead as well. If multiple regions
are selected and are under the playhead, they will all be split. When you split a
Software Instrument region, any notes at the split point are shortened to that point.
You can join multiple regions into a single region. To be joined, the regions must be
adjacent to each other on the same track, with no space between them.
To join regions:
1 Make sure the regions are the same type, on the same track, and adjacent to each
other.
2 Select the regions you want to join.
3 Choose Edit > Join.
When you join Real Instrument regions, a dialog appears asking if you want to create a
new audio file. Click Create to join the regions in a new Real Instrument region.
Real Instrument regions from your recordings (purple) can be joined only to Real
Instrument regions, and Software Instrument regions (green) can be joined only to
Software Instrument regions. Real Instrument regions from loops (blue) can't be joined.
Quickly Rearranging a Project
The GarageBand timeline includes an arrange track. You can add arrange regions to the
arrange track to define different sections of a project, such as the intro, verse, and
chorus. You can also move and copy arrange regions to easily rearrange the sections of
your project.
When you move or copy an arrange region, the music in all tracks in that section of the
project is moved or copied. If any automation curves are active in that section of the
project, including the master track, their control points are moved or copied as well.