To endure, one must evolve. That holds true everywhere from the animal kingdom to modern society. Survival itself relies on progression. Disturbed progress and confidently chart new territory on their seventh full-length album, "Evolution." Embodying the title’s meaning tenfold, the 2-time Grammy-nominated/multiplatinum-selling hard rock quartet (vocalist David Draiman, guitarist Dan Donegan, drummer Mike Wengren and bassist John Moyer) rearrange their musical DNA into a two-headed monster representative of dual styles: “Heavy” and “Ballad.” In doing so, they deliver a daring, dynamic and definitive body of work.