This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Lilypondscreenshotadeste. Screenshot of en GNULilyPondgenerated score for en Adeste Fideles own work mutopiaproject org ly Source file is public domain en User Ardonik new version with spelling correction made to title by en User Matt en User Ardonik release this image into the public domain as well File Adeste fideles svg File