The heirs of Erich Lederer, who fled Vienna when the Nazis annexed Austria in 1938, are demanding the return of Gustav Klimt’s masterpiece Beethoven Frieze (1902). The work was created in honor of the composer’s Ninth Symphony and remains one of Vienna’s Secession building’s biggest attractions.

Lederer’s heirs filed a request with the Ministry for Education, the Art and Culture under a law that regulates the return of Nazi-looted artwork. Their claim was made possible after Austria expanded the law in 2009 to cover instances where previous owners were forced to sell their artworks for unreasonably low values following World War II.

Lederer’s Klimt painting was seized by the Nazis and later returned following World War II. However, Austrian officials would only allow Lederer to export other restituted artworks if he sold Beethoven Frieze for $75,000, half of what Christie’s estimated the painting to be worth.

The Ministry says that it has yet to receive Lederer’s heirs’ filing but that the claim will be examined once it arrives according to the revised restitution law.