This work is likely not in the public domain in the US (due to first publication with the required notice after 1923, 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.
|Genre Categories||;; ; ;|
|Work Title||Flute Sonata|
|Alternative. Title||Sonate für Flöte und Klavier|
|I-Catalogue NumberI-Cat. No.||IPH 45|
|Year/Date of CompositionY/D of Comp.||1936|
|First Performance.||1937-4-10 in Washington, D.C.
|First Publication.||1937 – Mainz: Schott|
|Copyright Information||U.S. copyright status: |
|Average DurationAvg. Duration||14 minutes|
|Composer Time PeriodComp. Period||Modern|
Wikipedia article (German)
Opens and closes in B♭ major (give or take and more or less).
Renewal of 1965 is on title page of my copy of the score (I assume they mean 1964 or that it arrived in the mail in 1965, or somesuch, but in anycase, they do note that on post-1963 prints, it seems and reasonably.) - Schissel