Born in Buenos Aires, Argentina. Started signing his early works in 1998 as Index for the emerging local label "URL Records" founded by Charly Alberti (Soda Stereo). Later since the EP released via Blackflag (Detroit) in 2001, Leo became a reference of House Music, Techno House, Drum & Bass, Ambient and Breaks. Later he introduces the Chill Out music in Argentina as well as licensing his works for Europe and U.S. compilations. Nowadays holds a 24 year career performing electronic music, movie scores, djing and composing mostly for underground Techno House labels.