Dinosaur Jr. is now widely recognized as one of the most significant American rock bands of all time; the sound they pioneered in the late-80s having permeated through the past 20 years. Preceding Nirvana by several years, they were instrumental in bringing the crashing sounds of lead guitar back to indie rock. It wasn’t just their signature metallic haze that made an impression on listeners; their effects-laden guitars were wrapped around some of the best songwriting of the decade. The first three albums — Dinosaur, You’re Living All Over Me and Bug — were cult masterpieces and when the original line up of Mascis, Barlow and drummer Murph re-formed in 2005 for select live dates it was apparent that the years apart had not eroded any of their vitality. In fact, many critics claimed their shows were even better than they used to be. It was natural, then, that the band would begin to work on new material.