Mainstage 3.5.1 Access

: 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)

As a minor update to the larger milestone, it inherited major features introduced shortly before it, such as: MainStage 3.5.1

: Ensured that the Transpose function on multi-timbral channel strips worked as intended. : Starting with version 3

: Integration of the Sampler, Quick Sampler, Drum Synth, and Remix FX plug-ins. : Starting with version 3.5