Matador Records is throwing itself a 21st birthday party, and what better band to serenade the label as it turns legal drinking age—in Las Vegas, no less—than a reunited Guided By Voices? The “classic ’93 to ’96 lineup” of the bacchanal-rock band will join a huge roster of both vintage and present-day Matador groups that also includes Pavement, Sonic Youth, Belle And Sebastian, Spoon, Yo La Tengo, Cat Power, Jon Spencer Blues Explosion, The New Pornographers, and Superchunk playing at the Palms Casino And Resort over the course three nights, Oct. 1 through Oct. 3. You can check out the preliminary poster with the rest of the bands that have been announced below; more artists will be added on July 5, when Matador will also release ticket presale information on its website.