Free public domain sheet music from IMSLP / Petrucci Music Library
This work may not be in the public domain in the US (due to first publication with the required notice after 1922) 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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People's Commissariat of Defence Orchestra, Semeon Tchernetsky (conductor)
Public Domain - Non-PD EU [tag/del]