Calle 13

House of Blues presents Calle 13.

Puerto Rican rap duo Calle 13 are probably the feistiest major artists to hit Latin America since music legend Ruben Blades. Most recently they've made headlines across Latin America when they released the politically charged song "Multi Viral," an unlikely collaboration with Julian Assange (he has a spoken word bit mid-song, which the band recorded with him in Ecuador.) The song also features Rage Against The Machine guitarist Tom Morello and Palestinian singer Kamilya Jubran.

Calle 13 started off in Puerto Rico as one of the few politically outspoken reggaeton acts, making a splash with the brilliantly vitriolic "Querido FBI", in which Perez Joglar, known as Residente, goes on a lyrically flawless rant about the killing of Puerto Rican independence activist Filiberto Ojeda Rios by the FBI.

They quickly moved past the reggaeton label, creating some of the most danceable, hilarious, raunchiest lyrics in Spanish language music. But they became increasingly socially and politically conscious, tackling issues like Latin American pride and immigration to the U.S.

"It's my right, and as an artist you have to do it. I don't know why rappers in the U.S., they aren't saying anything," Perez Joglar told me in our recent interview. "Rappers who have a lot of popularity, they aren't using it. They are just talking about themselves, they aren't saying anything. That's so wrong. It's so selfish."