Harmageddon-music.com is a digital download site for official sheet music of Apocalyptica. Here visitors can view sheet music on screen, interact with it, then buy and print it out for later use. The site opened in 2004 and is maintained by Harmageddon Publishing, a company based in southern Finland.

For information on how Harmageddon-music.com works go to the Help page.

Harmageddon Publishing postal address can be received through email.