It is very unlikely that this work is public domain in the EU, or in any country where the copyright term is life-plus-70 years. However, it is in the public domain in Canada (where IMSLP is hosted) and other countries where the term is life-plus-50 years (such as China, Japan, Korea and many others worldwide). As this work was first published before 1928 or failed to meet notice or renewal requirements to secure statutory copyright with no "restoration" under the GATT amendments, it is very likely to be public domain in the USA as well.
|Genre Categories||Operas; Theatrical Works; For voices, mixed chorus, orchestra; Scores featuring the voice; Scores featuring mixed chorus; Scores featuring the orchestra; For voices and chorus with orchestra; Finnish language; Swedish language|
|Alternative. Title||Kullervo : opera en 3 actes et 4 tableaux d'après le drame d'Aleksis Kivi|
|I-Catalogue NumberI-Cat. No.||IAL 1|
|Year/Date of CompositionY/D of Comp.||1917|
|First Performance.||1917-2-28, Finnish National Theatre|
|Librettist||Armas Launis after Aleksis Kivi (1834-1872) after the Kalevala|
|Composer Time PeriodComp. Period||Early 20th century|
|Piece Style||Early 20th century|
|Instrumentation||Voices, Chorus and Orchestra|
|External Links||Operone (German)|
1919 date an estimate from several sources @WorldCat here. Lists German translation as being by other hands.