: Integration of the Sampler, Quick Sampler, Drum Synth, and Remix FX plug-ins.

According to the official release notes , this version addressed several critical issues:

: The ability to display and control score and lyric sheets directly within the Workspace.

: Fixed an issue where recordings from outputs other than Out 1-2 would mistakenly include audio from Out 1-2. Context within Version 3.5

MainStage 3.5.1, released by Apple on , was a maintenance update primarily focused on stability improvements and specific bug fixes for live performance setups. Key Stability & Bug Fixes

: Starting with version 3.5, MainStage required macOS 10.15 (Catalina) or later due to the new requirement for Metal-supported graphics. MainStage release notes - Apple Support (IS)