The soundtrack for World of Warcraft was composed and arranged by Jason Hayes, Tracy W. Bush, Derek Duke, and Glenn Stafford. It was released on November 23, 2004, together with the collector's edition of the game. It is also sold separately on one CD in the MP3 format. January 12, 2011, Alfred Publishing produced an officially licensed sheet music series for vocalists, pianists, strings, and other instruments, "World of Warcraft Sheet Music Anthology" in solo and accompaniment formats with CD included: A Call to Arms; Garden of Life; Gates of the Black Temple; Intro Movie: Seasons of War; Invincible; Harahan; Lament of the Highborne; Lion's Pride; Mountains of Thunder; Pig and Whistle; The Shaping of the World; And, Wrath of the Lich King (Main Title). These works also included four pages of collectable artwork, and vary by number of songs included.