Then students from Pontifical Catholic University of Rio de Janeiro, Marcelo Camelo (journalism), and Rodrigo Barba (psychology) formed a band that mixed hardcore influences with the lightness of lyrics about love.

The two demos eventually found their way to the hands of Paulo André, the producer of the Abril Pro Rock festival, in Recife.

The album's success was driven by the song "Anna Julia" chosen - for the record - as the first single, for it was a number that resonated among young people, identified with the Jovem Guarda style lyrics, mixed to a musical group influenced by rock, ska and samba.

[9] Its music video, which featured the actress Mariana Ximenes,[10] was constantly displayed on programs dedicated to both gender in channels such as MTV.

The song has been covered by many different artists, including Jim Capaldi with the guitar solo being played by George Harrison, in his last recorded work.

After the success of their first album, the band released Bloco do Eu Sozinho in 2001, leaving behind the hardcore sound that characterized their debut, instead favouring a mix of rock, samba, and other Brazilian rhythms.

The guitarist Rodrigo Amarante, now had more space in the band, with compositions like "Retrato Pra Iaiá", "Sentimental", "Cher Antoine" and "A Flor" (this one with Marcelo Camelo).

Bloco do Eu Sozinho, in spite of being considered (nowadays) as one of the best Brazilian rock albums of all time, did not have much impact in the media, mainly due to the conflicts with the label Abril Music.

[12][deprecated source] The follow-up to Bloco do Eu Sozinho, Ventura, was released in 2003, and the band's sound was even more influenced by samba, choro and bossa nova.

The band also recorded the soundtrack for the short film "Castanho", by Eduardo Valente, where the disco style was very evident in the early version of "Talk ..." and the song known only as "Tema do Macaco".

[15] Even after a note apologizing for the event,[16] Chorão was sued by Camelo and had to compensate the singer for moral damages and reimbursement of canceled commitments.

The attack occurred because of statements from Marcelo Camelo and Rodrigo Amarante, in the OI magazine, on the then recent advertising campaign for Coca-Cola soft drink brand.

[17] In 2008, both Bloco do Eu Sozinho and Ventura figured in Rolling Stone magazine's list The Top 100 Brazilian Albums of All Time, placing 42nd and 68th, respectively.

Whether it was the acoustic guitar in "Sapato Novo" and bossa "Fez-se Mar" or the predominance of a nostalgic mood in the lyrics of Camelo and Amarante, "4" again divided the public: the band was in another new direction.

On April 23, 2007, after ten years of uninterrupted career work, the band announced a recess for an undetermined time span (hiatus).

The note on the official website affirmed that there were no quarrels whatsoever among the band members, the reason for the recess simply being each one's need of time to dedicate to other personal activities.

In 2009, Los Hermanos played at "Just a Fest" festival at São Paulo and Rio de Janeiro, along with Kraftwerk and Radiohead.