ANTHRAX guitarist Scott Ian has revealed via Twitter that the next leg of the band's U.S. tour will commence the third week of January. More details will be made available soon.ANTHRAX has just completed a U.S. tour with TESTAMENT and DEATH ANGEL. The trek kicked off on October 14 in Grand Rapids, Michigan and concluded on November 19 in Milwaukee, Wisconsin. ANTHRAX's new album, "Worship Music", sold 28,000 copies in the United States in its first week of release to land at position No. 12 on The Billboard 200 chart. The band's previous studio CD, 2003's "We've Come For You All", opened with just under 10,000 units to debut at No. 122. The CD cover artwork for "Worship Music" was handled by renowned comic book artist Alex Ross, who has worked with Marvel Comics and DC Comics and is known for his "Marvels", "Kingdom Come", and "Astro City" illustrations. Ross also did the original artwork for ANTHRAX's "We've Come For You All" and "Music Of Mass Destruction" albums. "Worship Music" was produced by ANTHRAX, Rob Caggiano and Jay Ruston and recorded over a four-year period at studios in New York, Los Angeles and Chicago. Singer Joey Belladonna's return to the band prompted some of the songs originally recorded with previous singer Dan Nelson to be re-crafted with fresh lyrics or tweaked to better suit his overall vibe and energy. Some of the songs were completely replaced with brand-new songs and, of course, all have Belladonna's inimitable vocal stamp on them.