Sonic Youth have been around for 21 years—god knows how long that is in dog years. A generation of music listeners have grown up never knowing a world without Sonic Youth, and for the duration of the band’s existence, Thurston Moore, Kim Gordon, Lee Ranaldo, Steve Shelley and newest member Jim O’Rourke have defined artistic credibility and independence. Their newest album, Murray Street, has been hailed by many as one of their best, and certainly it’s t...