Video footage of TESTAMENT guitarist Alex Skolnick tracking harmonies at Spin Studios in Long Island City, New York for the band's cover version of the IRON MAIDEN classic "Powerslave" can be seen below. The song is included on the CD/DVD and vinyl versions of TESTAMENT's new album, "Dark Roots Of Earth", which sold more than 20,000 copies in the United States in its first week of release to land at position No, 12 on The Billboard 200 chart. The CD arrived in stores on July 31 via Nuclear Blast Records.TESTAMENT's previous studio album, "The Formation of Damnation", opened with 11,400 units back in May 2008 to debut at position No. 59. "Dark Roots Of Earth" was produced, mixed and mastered by acclaimed British producer Andy Sneap (ARCH ENEMY, NEVERMORE, ACCEPT, EXODUS). Special bonus tracks were recorded, mixed and mastered by Juan Urteaga (MACHINE HEAD, EXODUS, TED NUGENT, NIGHT RANGER) at his Trident Studios. The cover artwork for the effort (see below) was painted by Eliran Kantor, who has previously worked with ATHEIST, SIGH, ANACRUSIS and GWAR, among others.