Complex sentence: Charlie Brown Jr. was a Brazilian rock band, from the city of Santos, São Paulo, whose main influences was The Red Hot Chili Peppers, Suicidal Tendencies and Rage Against the Machine.
Split into simpler sentences: Charlie Brown Jr. was a Brazilian rock band, from the city of Santos, São Paulo. Their biggest influences are The Red Hot Chili Peppers, Suicidal Tendencies and Rage Against the Machine.