Hilary Hahn pictured with Key to Change violin student, Za’Rahia Howell 🎻 World’s Greatest Violinist Visits Key to Change For three extraordinary days, Key to Change had the profound honor of welcoming world renowned violinist Hilary Hahn as Violin Instructor in Residence. Her visit brought inspiration, mentorship, and world class musical guidance directly to students in South King County, creating moments that will shape their artistic journeys for years to ...