Dietrich Fischer-Dieskau (28 May 1925?? 18 May 2012) was a German lyric baritone and conductor of classical music, one of the most famous Lieder (art song) performers of the post-war period, described as one of the supreme vocal artists of the 20th century and the most influential singer of the 20th Century. Fischer-Dieskau was ranked the second greatest singer of the century (after Jussi Bj?rling) by Classic CD (United Kingdom) Top Singers of the Century Critics' Poll (June 1999).