Are you planning to use MainStage for or for controlling vocal/guitar effects ? MainStage User Guide - Apple Support
While minimums exist, experts recommend at least 16GB of RAM and up to 72GB of storage for a full sound library installation to avoid performance lag. Apple MainStage 3.5.2 Free Download
Introduced the ability to display and control score and lyric sheets directly within the workspace. Essential Requirements for Setup Are you planning to use MainStage for or
MainStage 3.5.2 is a exclusively for Mac, and while official "free" downloads of the full version do not exist, users can access a 90-day free trial through the Official Apple Website to test its live performance features. Version 3.5.2 Highlights Apple MainStage 3.5.2 Free Download