Dinosaur Jr. may be one of the most underrated indie-rock acts of the past 25 years. They weren’t as sexy as Pearl Jam or as populist as Nirvana, but the music dripping from the instruments of the criminally unsung J Mascis, bassist Lou Barlow and drummer Murph has always been fuzzy, influential gold. Take your pick from Bug, You’re Living All Over Me or Without a Sound, and you will be sure to find a groove to latch onto. The new I Bet On Sky is no small shakes, either.