The official way to get MainStage is through the Mac App Store .
With Apple Silicon (M1/M2/M3) Macs dominating the market, is it wise to install Intel-based version 3.6.6? MainStage-3.6.6.dmg - allmacworld
You already own a legitimate license for MainStage 3.x, lost your original file, and need this exact version for a specific live show or plugin that breaks in newer macOS. The official way to get MainStage is through