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 1923 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||1906 (but see below)|
|Genre Categories||; ; ;; ; ;|
|Work Title||Piano Concerto No.1|
|Opus/Catalogue NumberOp./Cat. No.||Op.10|
|I-Catalogue NumberI-Cat. No.||IAW 1|
|Year/Date of CompositionY/D of Comp.||1906 (but see below)|
|First Publication.||1921 – Copenhagen: Hansen (or earlier)|
|Average DurationAvg. Duration||30 minutes|
|Composer Time PeriodComp. Period||Romantic|
Orchestra: Piccolo, 2 flutes, 2 oboes, 2 clarinets, 2 bassoons, 4 horns, 3 trumpets, 3 trombones, tuba, timpani, strings (instrumentation of 1935 revised version??)
(gives instrumentation of work. Says (1906/35) for composition date - may refer to a 1935 revision not mentioned by notes to Hyperion recording?)
Yes, revised 1935, at least according to.