Apple MainStage - Manual (Page 88)

88 Chapter 8 Performing Live With MainStage
Selecting Patches Using Program Change Messages
If your MIDI device has buttons or other controls that send program change messages,
you can select patches in your concert by program change number. You can use
program change messages to select patches, but not sets.
For information about how your MIDI device sends program change messages, consult
the documentation that came with the device or the manufacturer’s website. For
information about changing the program change number for a patch, see “
Changing
Program Change Numbers ” on page 49.
Using Screen Controls in Performance
In performance, you use the controls on your MIDI hardware devices that are assigned
to screen controls to manipulate the parameters mapped to those screen controls.
When you select a new patch, the parameters you mapped for that patch are instantly
available for editing.
When you move a physical control, the screen control instantly moves to reflect the
current position of the physical control, and the parameter mapped to the screen
control is instantly updated to the current value. MainStage screen controls do not
“latch” to a specific value or move relative to the physical control, but reflect the
current value.
Handling Tempo Changes in Performance
When you open the concert you plan to use in your performance, MainStage uses the
tempo for the concert you set in the Concert Inspector. If the “Get tempo from MIDI
input” checkbox is selected, MainStage uses incoming MIDI tempo messages to set the
tempo. For information about setting and changing the tempo in a concert, see “
Using
Tempo in a MainStage Concert ” on page 39.
If you select a patch or set with its own tempo setting, the tempo changes to the new
setting. You can also change the tempo in real time while you perform using the Tap
Tempo feature, either by pressing Control-T repeatedly at the tempo you want to use,
or by clicking the Tap Tempo button in the Toolbar repeatedly.