10.6

146Logic Pro User Guide
Use the Chase Events function in Logic Pro
If you start playback in the middle of a project, some events might not be heard (such
as MIDI notes, sustain pedal events, and pitch bend events that start before the point
where playback begins). With the Chase Events function, Logic Pro analyzes the project to
include some or all of these events when the project plays back.
There is a potential problem when using Chase Events with notes used to trigger a drum
loop in a sampler. Unless you start the MIDI region precisely at the beginning of the sample
loop, the sample will be triggered at the wrong time and will play out of sync with other
regions (at least until the next trigger note). The problem occurs because most samplers
can only play samples from the beginning, and can’t synchronize them to the beat when
started in the middle.
The Chase Events function is available only when Show Advanced Tools is selected in
the Advanced preferences pane.
Set up the Chase Events function
1. In Logic Pro, choose File > Project Settings > MIDI (or use the Open MIDI Project
Settings key command), then click Chase.
2. Select the checkboxes of all events you want to include in project playback.
For more information, see Chase settings in Logic Pro.
Avoid triggering sampler drum loops when chasing note events
1. In the Logic Pro Track inspector, select the No Transpose parameter of your drum loop
instrument.
2. Deselect the In ‘No Transpose’ Instrument Channel Strips option in the File > Project
Settings > MIDI > Chase pane.
These settings prevent your sampler’s drum loops from playing until they reach the next
trigger note, whenever the project jumps to a new position.
The No Transpose parameter actually prevents transposition by the region playback
parameters, which is also not desirable for drum sounds or loops.