The world is determined to not let the 20th anniversary of the release of Nirvana's landmark second album Nevermind pass by without recognition, and now the band's bassist is getting into the act. Krist Novoselic is set to perform at a Nevermind tribute concert on Sept. 20 at Seattle's Experience Music Project with the Fastbacks, the Long Winters, Vaporland, and Visqueen, among other bands. One notable figure who probably won't be there is Dave Grohl, who will be performing with Foo Fighters in Cleveland that night. [Via Pitchfork]