The crowd for last week’s sold-out Dinosaur Jr. show at Black Cat in Washington, DC was one of the most diverse audiences I’ve seen at a rock show in some time, especially with regard to age. From young teens to mid-lifers, the variety of faces in the crowd testified to the unique appeal Dinosaur Jr. offers in a fragmented music industry. The band’s discography spans 27 years, an age acknowledged in urban legend as the time at which rock icons are destined to expire. But if the current tour and latest album I Bet on Sky are reliable indications, then Dinosaur Jr. shows no sign of slowing. The band is on tour throughout the month of November.