German composer, pianist and accompanist, known especially for his literary operas. His version of Shakespeare's King Lear, the opera Lear, was written at the suggestion of Dietrich Fischer-Dieskau, who sang the title role. His opera Medea after Grillparzer's play premiered in 2010 at the Vienna State Opera. He was a professor of contemporary song in Hamburg and Berlin. In 2011, he was awarded the Ernst von Siemens Music Prize for his life's work.