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 1925 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.
|Composition Year||1923 August-September|
|Genre Categories||; ;; ; ;|
|Work Title||Kanonische Sonatine für Zwei Flöten|
|Alternative. Title||Canonic Sonatina for 2 Flutes|
|Opus/Catalogue NumberOp./Cat. No.||Op.31 No.3|
|I-Catalogue NumberI-Cat. No.||IPH 69|
|Year/Date of CompositionY/D of Comp.||1923 August-September|
|Dedication||Für Herrn Paul Hagemann|
|Average DurationAvg. Duration||6 minutes|
|Composer Time PeriodComp. Period||Modern|
? (says Op.31/2, though this is assigned to a violin sonata? Dedicatee is different, also. Still, could this be the same work?)
English title: "Sonatine (In Canon Style)," Referred to as Op. 31 No. 2 prior to publication.