Charlie Brown Jr.'s songs blended various musical genres such as hardcore punk, reggae, rap, alternative rock and skate punk, creating their own unique style.
Charlie Brown Jr. appeared in 1997 with the CD Transpiração Contínua e Prolongada. The album sold 530,000 copies and had the hits "Proibida pra Mim" and "Sheik." Two years later, the group released Preço Curto...Prazo Longo, which had the hits "Te levar" and "Confisco." In 2000, the group had a successful season at the ATL Hall/Metropolitan.