American soprano Roberta Knie passed away on March 16, 2017, at the age of 79. Knie was born on March 13, 1968, and was best known for her work in Wagner’s operas. She made her professional debut in 1964 as Elizabeth in “Tannhäuser” at the Hagen Theater. Her next major career milestone took place in 1974 when she was asked {…}