The music magazine The Fader is putting on a free show at the historic site of Sigma Sound Studios on 12th Street tonight with Wu-Tang rapper GZA and Austin, Texas all-purpose Latin funk ensemble Grupo Fantasma, who have also backed up Prince one more than one occasion. DJ Caesar will be spinning as well. And people, it's free. Go here to RSVP. The whole business is sponsored by Captain Morgan, so they'll probably be a dude there just up like a pirate with an eye patch.