Here’s our second consecutive story about a musician’s charitable endeavors. Marc Brownstein is currently auctioning off his Ibanez ATK bass guitar, which he used in the studio on recordings by the Disco Biscuits and Conspirator. All proceeds from the auction will be directed to Hurricane Sandy Relief efforts in the Long Beach, NY area. A case is included, as are extra strings and picks, with the auction set to end on December 6.