No other band has affected modern progressive metal as deeply or widely as American quintet Dream Theater. Formed at Berklee College of Music as Majesty in 1985 by guitarist John Petrucci, drummer Mike Portnoy, and bassist John Myung, the group has spent thirty years repeatedly pushing new boundaries and reinventing their identity. Although other acts - such as Queensrÿche and Fates Warning - paved the way for the prog-metal subgenre, Dream...