Dizzee Rascal, Four Tet and LCD Soundsystem's James Murphy are among the latest acts confirmed for Sonar 2011, which will take place in Barcelona from 16-18 June.
Ghostpoet, oOoOO, Yelawolf, Tiga, Martyn and Radio Slave are also among the names added to the bill which already boasts Underworld, Magnetic Man and Salem.
Three-day passes are on sale now, priced at 155EUR.
Sonar Galicia 2011 takes place on 17-18 June in A Coruna. Two-day passes are on sale now, priced at 60EUR.