Aventura was formed by Anthony Santos, Henry Santos Jeter, Lenny Santos, and Max Santos in 1994. Two of the band members are brothers but as far as I know the other band members are not related to each other. Three of the band members grew up in the Bronx and the other band member was raised in the Dominican Republic but the band members, who grew up in the Bronx are nevertheless of Dominican and Puerto Rican descent. Originally they played bachata music but they became popular when they combined their bachata music with R&B and Hip Hop music.
Obsesion was released in 2004 and it is one of Aventura's many hits and as you can probably guess: it's about an obsession with a girl!