Born as a public through the television program "El Semaforo" in 1994.

In 1998 publishes the single I Love You, which coincidentally was the one who wrote only 12 years, under the label Black and White with a good reception from the public. That same year he tried his luck as a TV host for a local chain in Sabadell, "Channel 50", which is now known as Canal Català. The program was titled Toni Ruiz y Cia, and he Josmar heart had a section titled The goal. In late 1999 josmar decides to start his career as a music producer.

In 2000 released his next single "Girls", which would be his first musical production which would be released later in the rest of Europe and in New Zealand. under the label of "Moder music". In that year Josmar Gerona record as a partner in Top 40 on the morning program Anda Ya, just spent a year as a collaborator because in 2001 he joined the program Radio Flaixbac Wake "The matí i la mare that will give birth" (the Catalan "The morning and the mother who bore")

In 2003 Tab by RAC 105, Godo Group station in Catalonia, to collaborate in the morning space "Fricandó Matiner" until 2011, when he decided to stop working on the program to other projects on the world of film and television .

In 2004 he participated in the movie FBI: Geeks Wanted Incordiar Javier Cardenas, also collaborating in the disc that came with the film, entitled "The Geeks". In 2005 Hot boy produces and edits, this time under his own record label, MA nagement (currently Geromax Music Productions). And, in 2008, founded the Internet TV channel "Seven Television" which leads in-house productions and other third party content.

In 2010, and after two years of musical absence, returns with a new work entitled "Ragazza" to be followed, in 2011, "Kisses", with the same success as the previous. In 2012 he dares to perform a version of "Kiss" theme that in the eighties were played by the singer "Prince", who became world known.

Josmar is combining his work as a film producer, musical, actor and television presenter.