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I was scrolling across my computer files and I found a score of this piece that was published in 2022 by the Institute of Investigation of Etnomusicolgy of Argentina and the General Direction of Art Teaching (idk if that's correctly translated) and in the 4th page it says:

This edition is freely accessible and available for use under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. You are free to share (copy and redistribute the material in any medium or format) and adapt (remix, transform, and build upon the material), provided that you comply with the terms of the license, which are as follows: • Attribution — You must provide appropriate credit, include a link to the license, and indicate whether any changes have been made. You may do so in any reasonable manner, but not in a way that suggests the licensor endorses you or your use of the material. • NonCommercial — You may not use the material for commercial purposes. There are no additional restrictions. You may not apply legal terms or technological measures that would legally restrict others from making any use permitted by the license. In the event of partial or complete publication, or inclusion in concert programs, the material must be accompanied by the following statement: “Score provided by the Institute for Research in Ethnomusicology, General Directorate of Artistic Education, Government of the City of Buenos Aires.”

Could be this score elegible for uploading as it's free to share without commercial purposes and the autor is in PD?
This is the link to the PDF: https://static.buenosaires.gob.ar/sites ... 925%29.pdf