The centenary of the birth of the great Swedish soprano Birgit Nilsson fell in May and the Birgit Nilsson Foundation has overseen various commemorative projects including a DVD and a 31-CD set of Nilsson's greatest roles recorded live and issued by Sony Classical. And 2018 also saw another musician honoured with the Birgit Nilsson Prize, the soprano Nina Stemme. James Jolly caught up with Rutbert Reisch, the President of the Birgit Nilsson Foundation, in Stockholm and talked to him about the singer and her extraordinary career as documented on the live recordings.