Freire grew up in Puerto Rico, where he listened to opera music because it was his father’s passion. However, the boy, just like other group members, liked English music. He favored Kiss and Peter Frampton. When all of his friends were crazy about salsa, Freire stood out of the crowd with his love for Led Zepplin.
By 2000, Bacilos changed their music. It turned into a combination of rock, ska, reggae, bosa nova, and other genres. The group members added violin, cello, and a few wind instruments into the mix. In the beginning of 2000, Bacilos signed a contract with WEA. Together they released the first album Bacilos. The LP was very successful and received a Latin Grammy nomination. However, none of the songs became top radio hits. The band rectified this mistake when recording their next album. “Mi Primer Million” was a huge success and became the song of 2002.
In 2002, the band recorded their most successful album Caraluna. It was nominated for three Latin Grammy awards and won one of them for Best Pop Album by a Duo or Group with Vocals. The single “Mi Primer Million” reached the 18th spot on Billboard Hot Latin Songs and Latin Pop Songs Charts. In 2003, the song won a Latin Grammy Award for Best Tropical Song. The artists managed to make booking Bacilos for any Miami club or bar, where they used to want to perform, nearly impossible. Young men moved on to the next level.
In 2004, the band released their next album called Sin Verguenza. The first single from the LP “Pasos de Gigante” topped Argentinian charts, reached the second spot in Chile and made it to the top-10 of the Billboard Latin Singles Chart. In 2005, the LP earned a Latin Grammy for Best Pop Album by a Duo or Group with Vocals.
In 2006, during a USA tour, Bacilos announced disbanding. In 2007, they made a live appearance in Chile and disappeared from the stage for 10 years. In 2017, the band members reunited and released another hit song "Por Hacerme el Bueno".