Watchtower

Watchtower remains on the most over-the-top prog metal outfits of all-time. Their songs often came off as excuses to shred away and show off their member's instrumental prowess, and although the group remains quite obscure, they (along with Dream Theater) spawned countless musical offspring by the '90s -- Spock's Beard, Dali's Dilemma, Cairo, Ice Age, Royal Hunt, etc. The Texas-based band first came together in the early '80s, drawing inspiration from such established challenging rockers as Rush and Iron Maiden -- and featuring the lineup of frontman Jason McMaster, guitarist Ron Jarzombek, bassist Doug Keyser, and drummer Rick Colaluca. 1986 saw the release of the group's debut album, Energetic Disassembly, as Watchtower immediately built a cult following in Europe, where prog metal is widely worshipped.