Though they made their initial mark as frontrunners of the grunge movement of the early '90s, Pearl Jam began -- and have remained -- more emotionally curious and stylistically adventurous than many of their flannel-clad peers of that era, expanding past the angst and dissonance often associated with grunge to become one of the most popular and enduring rock & roll bands of their time. Their 1991 debut Ten stood out in an age defined by irony, offering loud, guitar-forward anthems that were unflaggingly sincere. Much of this earnestness stemmed from Eddie Vedder, a lead singer...