Watchtower is an American progressive metal band based in Austin, Texas, active from 1982 to 1993 and they have reunited occasionally since 1999. The band has released two studio albums―Energetic Disassembly (1985) and Control and Resistance (1989)―as well as one compilation album, four digital singles, one EP and three demo cassettes, and has been featured on numerous compilation albums. They are also notable for featuring vocalist Jason McMaster, who left Watchtower after the release of Energetic Disassembly to form Dangerous Toys, and was replaced by Alan Tecchio, who appeared on Control and Resistance and the band's 2016 EP Concepts of Math: Book One. Influenced by the progressive rock and then-burgeoning new wave of British heavy metal scenes, Watchtower has been credited (along with Voivod and Coroner) for helping pioneer the subgenre of "technical thrash metal" (also known as "progressive thrash metal"), which mixed elements of progressive music with thrash/speed metal. The band has also been cited as having influenced many notable progressive or heavy metal groups, including Dream Theater, Death, Annihilator, Coroner, Atheist, Pestilence, Cynic, Symphony X, Toxik, Sieges Even and Spiral Architect. History Initial career (1982–1993) Watchtower was formed in May 1982 in Austin, Texas. The quartet made its recording debut in 1983 with an early version of the song "Meltdown", which was included on the Cottage Cheese from the Lips of Death - A Texas Hardcore Compilation LP. It was followed by the debut album, Energetic Disassembly, issued in 1985 on the band's own DIY label, Zombo Records. An earlier version of the album was scrapped after the group's label, Rainforest Records, closed its doors. Energetic Disassembly is notable for its heavy use of time changes and is considered to be a landmark in progressive metal, as well as the first album for crossing over the genres of progressive and thrash/speed metal, thus the creation of the subgenre known as technical thrash metal. The album saw Watchtower tour with bands such as Slayer, Anthrax, Helstar, Celtic Frost, Voivod and Armored Saint. In the fall of 1986, guitarist and founding member, Billy White, quit the band in order to pursue different styles of music. He formed the short-lived Khymera with Juggernaut drummer Bobby Jarzombek and former Karion bassist Pete Perez before joining vocalist Don Dokken for the Up from the Ashes album in 1990. With Watchtower's future briefly in doubt, Doug Keyser auditioned for Metallica following the death of