Impromptu, H.166 (Martinů, Bohuslav)
This work likely not be 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) 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.
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Scores and Parts
Praha: Hudební Matice, 1934. Plate H.M. 589.
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