He was also interested in Czech music, and completed his book The Operas of Leoš Janáček shortly before his death.
また彼はチェコの音楽にも関心を持っており、死の直前に著作「レオシュ・ヤナーチェクのオペラ作品 The Operas of Leoš Janáček」を完成させた。