Raul "Alexis" Ortiz and Joel "Fido" Martinez have been in the reggaeton scene since they were teenagers trading verses with their buddy Wisin. But they didn't drop their debut until 2005, and what a debut that was. Los Pitbulls' first single, "Eso Ehh!", spent weeks in the top spot on the Latin Billboard charts, and it's become a reggaeton anthem just a rung below songs like "Gasolina" and "Rakata." A 2006 hits album collected their many mixtape contributions in one place, and that was followed by an appearance in the 2007 reggaeton flick Feel the Noise. Their subsequent release, Sobrenatural, kept up the pace with two charting singles and two Latin Grammy nominations, and in 2009, the group dropped Down to Earth, a masterfully produced release that stepped well beyond reggaeton's once-rigid boundaries.