Apple Logic Pro X - Manual (Page 185)

Chapter 7 Work with tracks 185
Work with Track Stacks
Track Stacks overview
Track Stacks provide a convenient way to organize and control tracks, to manage projects with
high track counts, and to create and manage audio subgroups.
There are two types of Track Stacks: folder stacks and summing stacks. Both types have a main
track and one or more subtracks. The track header for the main track features a disclosure triangle
that lets you show or hide the subtracks. When you close the stack, only the main track appears
in the Tracks area.
Subtracks can include any track type: audio, software instrument (including layered and multi-
output software instruments), external MIDI instrument, or aux tracks. Folder stacks can also
include summing stacks as subtracks.
Folder stacks
Folder stacks let you combine multiple tracks and control them as one unit, without changing
the audio routing of the individual subtracks. When you create a folder stack, the channel strip
assigned to the main track is called the stack master. Using the main track or the stack master
channel strip, you can mute, solo, and adjust the volume level for the folder stack.
Main track
Subtracks
Individual subtracks in a folder stack can have Smart Controls, but the main track has no Smart
Controls. There are no patches for the main track of a folder stack, and no patch can be saved
when the main track is selected.
There are no regions on the main track of a folder stack, only on its subtracks. When the folder
stack is closed, the main track displays an overview of the combined contents of all subtracks.
When you mute a folder stack using the Mute button on the main track (or stack master channel
strip), the mute or solo state of individual subtracks is preserved, and becomes active again when
the main track is unmuted.