Twenty-five years ago American orchestras began a conversation about what would happen to excellence in performance if orchestras broadened their missions to focus on education and community engagement. The fear, unfounded, was that excellence would be compromised. The opposite was true. Today, administrators of top performing arts organizations are begging for those of us who train artists to start training like it’s the 21st century and not the 19th. More than new skills—which is certainly part of it—this requires something more difficult: a change in the mindset of musicians. We must understand we’re all in the audience development business.