Go to the and purchase MainStage. For $30, you get:
: Includes fixes for potential crashes when loading certain concerts or interacting with the Logic Remote app while MainStage is hidden. System Requirements for Version 3.6.6 MainStage-3.6.6.dmg - allmacworld
Once you've downloaded the MainStage 3.6.6.dmg file, follow these steps to install and activate the software: Go to the and purchase MainStage
At its core, MainStage uses "Patches." A Patch contains one or multiple channel strips (Instruments, Audio, or External MIDI). Version 3.6.6 introduced a refined Patch selector that allows for "Live" folder view, letting you organize setlists with ease. You can switch between a grand piano for a ballad to a dubstep wobble bass for a drop in under 20 milliseconds without audio dropout. MainStage-3.6.6.dmg - allmacworld