For simplicity the forum uses the European rules for length of copyright, but where composers are not EU citizens there may be other definitions allowable. However, rules in some countries can be very complex, and moderators are not international copyright lawyers, nor do they have the time or expertise to check every case for eligibility.
If you wish to upload or link to a particular piece which you believe to be public domain but which does not fit into the existing rules, please ask the moderators first, giving details of the composer's nationality and date of death, the year and country of publication, whether the option to renew copyright was exercised where applicable (and, if so, in which year), a quote of the relevant legislation articles (with translation into English if necessary), and a link to an official government website carrying full details of the said legislation. We shall then consider it and get back to you.
In cases of uncertainty over the acceptability of a direct link, remember that it is sometimes easier to provide suitable keywords to allow other members to find the item by searching for it themselves.
Classical Guitar Forum.
"Experience is something you don't get until just after you need it." - Steven Wright