Rex Mix is an EP Remix recorded by Argentine rock band Soda Stereo. It was their second effort EP and was released by Sony Music in 1991. The EP contains remixes and new arrangements of previous songs, two songs recorded live at Gran Rex Theatre in Buenos Aires (Hombre al agua, and No Existes), and one new track: No necesito verte (para saberlo). Daniel Melero, then a frequent collaborator of the band, played an important role in this EP, doing remixes and bringing new concepts to the band.