Os Siderais is a Brazilian rock band formed in 1983 in the city of Porto Alegre. The band's music is a blend of rock, blues, and Brazilian folk, and they are known for their energetic live performances. Os Siderais have released over 10 albums, including their self-titled debut in 1985 and their latest album, "Blues Cigano," in 2022. The band has toured extensively throughout Brazil and has also performed in Europe and the United States.