Cellist Valerie Chen '22 performs with a pencil as part of Thursday's performance of The Heart is a Bell, presented by Iva Bittová and the MIT Symphony Orchestra. Oct. 16, 2019 Facebook Twitter Reddit Print Cellist Valerie Chen '22 performs with a pencil as part of Thursday's performance of The Heart is a Bell, presented by Iva Bittová and the MIT Symphony Orchestra.