Wilhelm Magner on Instagram: "Struggling with vibrato? Try this powerful exercise, where the goal is to connect our vibrato to our natural singing instincts. Too often we get carried away by the analytical side of technique and we begin to sound robotic. This exercise is there to change that. Remember: when we sing, no two notes are the same, so why shouldn't it be that way with vibrato? #viola #violin #vibrato #practice"