Das Wunder der Heliane (The Miracle of Heliane), Op.20 is an opera in three acts by Erich Wolfgang Korngold with a libretto by Hans Müller-Einigen, after Hans Kaltneker. It was first performed at the Hamburg State Opera on October 7, 1927.
After many successful premieres across Germany, Korngold composed this new opera beginning in 1924. Before its premiere in 1927 Korngold claimed that this would be his masterwork.
At the world premiere in Hamburg the audiences and critics were unimpressed, feeling that Korngold's music held no new surprises and it was not modern. Critics were united in their lack of esteem for the work, many simply dismissing it as kitsch.
The opera is generally considered to have been a flop for Korngold, following as it did the critical and public success of Die Tote Stadt and several other operas by the composer. Within the artistic community however there is evidence that there was admiration for the work, soprano Lotte Lehman even stating that the title role was her favorite. This 1992 recording stars Nicolai Gedda, Andreas Scholz and Anna Tomowa-Sintow. John Mauceri conducts the Berlin Radio Symphony Orchestra.