This work is likely not in the public domain in the US (due to first publication with the required notice after 1922, plus renewal or "restoration" under the GATT/TRIPS amendments), nor in the EU and those countries where the copyright term is life+70 years. However, it is public domain in Canada (where IMSLP is hosted) and in other countries (China, Japan, S. Korea) where the copyright term is life+50 years.
|Composition Year||1924-25, rev. 1946|
|Genre Categories||; ; ;|
|Work Title||Piano Sonata No.4|
|Opus/Catalogue NumberOp./Cat. No.||Op.27|
|Year/Date of CompositionY/D of Comp.||1924-25, rev. 1946|
|First Performance.||1926 in Switzerland, Friedrich Wührer* ; Moscow, H[einrich/enryk...] Neuhaus|
|First Publication.||1925 (first version)|
|Copyright Information||This work is claimed to be under copyright in the USA due to|
"restoration" via the GATT/TRIPS amendment (Section 104).
|Dedication||Samuil Yevgenyevich Feinberg (1890-1962)|
|Average DurationAvg. Duration||22-30 minutes|
|Composer Time PeriodComp. Period||Early 20th century|
|Piece Style||Early 20th century|
Wikipedia article (German)