FOLDERIDMusic
FOLDERID_Music is a Known Folder ID in the Windows Shell that identifies the user’s Music folder. It is part of the set of Known Folder IDs introduced to provide a stable, user‑specific storage location that applications can reference without relying on a fixed path.
By default, the path is C:\Users\<User>\Music, but it can be relocated or redirected by the user or
Applications obtain the actual path using Windows APIs such as SHGetKnownFolderPath or SHGetFolderPath with the KNOWNFOLDERID
Relation to libraries: FOLDERID_Music is a Known Folder, not a Library. Libraries are aggregations of multiple
Notes: The ID helps maintain consistency across environments and configurations, supporting localization, roaming profiles, and policy-driven