Long Island, New York's Dream Theater are the globally celebrated standard-bearers for progressive metal in the 21st century. They deliver tight, melodic, musically sophisticated songs and thematic concept recordings encompassing elements of hook-based hard rock, riff-fueled metal, syncopated prog, and refined lyrics. Their second album, 1992's Images and Words, established their sonic signature, while 1994's Awake and 1999's Metropolis, Pt. 2: Scenes from a Memory cemented their place in metal's pantheon. For 2016's The Astonishing, a double-length dystopian sci-fi opera, the...