|Genre Categories||; ; ;|
|Work Title||3 Piano Pieces|
|Opus/Catalogue NumberOp./Cat. No.||Op.33|
|I-Catalogue NumberI-Cat. No.||IEM 33|
|Composer Time PeriodComp. Period||Early 20th century|
is pieces or the equivalent title known to have been the published title of Op.33, or would it help to try to look this up in HMB or a similar source to see what Op.33 was published as (if it was published as a unit at one time with a single title- not every "opus number group" always was)?