The Portugese festival takes place in Lisbon July 13 - 15 2012.

Also among the first acts announced are Florence And The Machine, Snow Patrol and Mumford and Sons.

It will be the sixth time the festival has taken over Lisbon - with 90 acts playing over the three days.

Tickets are on sale now.

First acts announced:

Caribou
Florence And The Machine
Justice
Mazzy Star
Metronomy
Mumford and Sons
Paus
Radiohead
Snow Patrol
The Cure
The Kooks
The Stone Roses

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