Javier Larrosa was born June 09, 1979 in Uruguay, Lavalleja State, City of Minas. Going away to live early to Brazil, place where they’re know and friends influence of determining form in their musical taste. Discovering in the first years of the decade of the 90s its taste by house and electronic sounds. In 1998 it returns to his country (Uruguay), visits MIllenium Dances (very representative club then in the Uruguayan electronic scene) knows Fernando Picon, dj resident of the club, as of that moment covered that that was what wished to do by the rest of its days. At the beginning of year 1999 it buys his first trays and his first discs, in his stage of musical experimentation as much discovers to Danny referring Dj Tenaglia that serious in those years, following to him his musical line passing through styles as house deep-house and tribal. In 2000 and 2001 with a technique not very polished, but already taking his first steps, it participates in events obtaining excellent presentations. In the 2002 he is already co producing of radial program (Ultrabeats) spread in 92.1 FM ‘Digital’ (Minas).
In the 2002 it acquires participation like dj professional touching in clubs – Milenio Dance (MVDO) Dreams (Minas) El Reino (MVDO). In the summer of the 2003 it participates in innumerable events celebrations and radio show of Univer Dj. In Punta del Este FM del Sol 99.5 and in Montevideo 95.5 ‘Del Plata’ FM. In the summer of the 2004 it discovers Punta del Este and its matchless electronic scene, obtaining will express in its diverse musical facets, during the day delights to public of Restaurants Lounges Inns with alternative sounds. And during the resident night being invited and of diverse events bars clubs and discos. From that then Punta del Este it is the chosen place, to spread his music in every summer. At the beginning of the 2006 Javiunder experiment changes in its sounds and appreciation musical under the influence of artists like Jimpster, Justin Martin, Gui Baratto, Loco Dice, Doctor Rockit, Matthias Tanzmann, Fabian Argomedo, Sebastian Schwartz, Killahertz, Eric Delay, Lanzzich, Lea Vemotte, Mujuice, Microboss among others, developing a line of elegant sound eclectic generated from styles like deep-house deep-minimal and tech-house, In the middle of year 2006 it travels to Santiago of Chile becoming to know in the electronic scene, being invited reiterated times to celebrations events and radioshows.
In October of the 2006 it publishes next to its friend and partner dj Fabian Argomedo (Chile) its first track Alcanzarte titleholder by the Reix Record. Track that marks the beginning of Javiunder like producer, being support of dj Tucher (Germany) and chosen between best Top 40 of the month in March of the 2007 by the Richmond Records (Canada). By the end of the 2006 travel professionally for the first time to Brazil. As of that moment launch in the scene of this country, celebrations events producing and mixes works for artists and bands of this country, obtaining diverse presentations in the 2007. By the end of February of the 2007 Javiunder begins its first ‘South American Micro Tour 07’ with presentations in Chile, Peru and Brazil.