REPERTORIUM uses AI to digitise ancient and classical manuscripts, preserve European musical heritage, and create state-of-the-art sound processing technologies, including metaverse-ready immersive audio. Its outcomes will revolutionise music scholarship, enhance streaming revenues, and empower musicians. The technologies are the foundation of a general musical artificial intelligence that fully unleashes the powers of machine learning upon the domain of European classical musical heritage that advances us towards a human-centred digital world.