Matter" (digital single, 2010) "Arguments Against Design" (digital single, 2015) "M-Theory Overture" (digital single, 2015) "Technology Inaction" (digital single, 2015) Concepts of Math: Book One (Prosthetic Records, 2016) Concepts of Math: Book Two (TBA) Demos Meltdown (1984) Demo 1987 (1987) Instruments of Random Murder (1987) References External links Official website Official Watchtower message board Watchtower On YouTube Watchtower On Last.fm Watchtower On RateYourMusic.com American progressive metal musical groups American thrash metal musical groups Heavy metal musical groups from Texas Musical groups from Austin, Texas Musical groups established in 1982 1982 establishments in Texas Noise Records artists