Drawn together by a shared love of heavy metal and progressive rock, Riverside emerged in the early 2000s in Warsaw, Poland. Founded by mutual friends who intended to use their backgrounds in metal to explore new territory in prog rock along the lines of Dream Theater, Porcupine Tree, and Tool, the quartet began creating spacious and experimental music with a metal edge on their 2003 debut, Out of Myself. They hit their stride in the late 2000s, topping the Polish charts in 2009 with their fourth full-length outing, Anno Domini High Definition. The untimely death of guitarist ...