Libre art LilyPond files in the Libre art A4 project:: https://libreart.net/libreart-a4/libre-art-music/
Libre art theatre in the Libre art A4 project:: https://libreart.net/libreart-a4/libre-art-theatre/
Libre art texts in the Libre art A4 project:: https://libreart.net/libreart-a4/libre-art-text/
latest edit: SZERVÁC Attila