 After battling Parkinson's disease for more than a decade, he died of pneumonia in November 2010 at the age of 66.From Bayreuth, Hofmann appeared as Siegmund in the 1980 "Die Walküre" (with Dame Gwyneth Jones as Brünnhilde) conducted by Pierre Boulez, in Patrice Chéreau's 1976 "Ring" production (Deutsche Grammophon), and in the title role of the 1982 "Lohengrin" (opposite Karan Armstrong as Elsa) conducted by Woldemar Nelsson (EuroArts), in Götz Friedrich's production.In the studio, he made a 1978 recording of "Die Zauberflöte" under French conductor Alain Lombard with Dame Kiri Te Kanawa and Kathleen Battle, then "Fidelio" (conducted by Sir Georg Solti, 1979), "Parsifal" (opposite Dunja Vejzovic's Kundry, led by Herbert von Karajan, 1979–80; also opposite Waltraud Meier's Kundry, led by James Levine, live 1985), "Orfeo ed Euridice" (1982) and "Der fliegende Holländer" (with José van Dam and Vejzovic, conducted by von Karajan 1981–83).