Following recent controversies surrounding samba groups and their use of loud sound systems in the historical center of Olinda, the city's government published a decree that sets new regulations for sound equipment during the Carnival of 2026. The new rules include a significant fine of R$ 10,000 for any groups that obstruct the movement of traditional carnival associations, including blocks of frevo and maracatu. While this aims to maintain the flow of the historic parades, it controversially allows sound cars, which are criticized for detracting from the traditional carnival experience.

The decree has sparked ongoing debates among musicians and representatives of traditional carnival groups, particularly as it does not address the issue of isolation cords traditionally used by percussion groups. These isolation cords are seen as a means of separating different musical groups and preserving the integrity of the traditional sounds during the festivities. Critics, including long-standing conductors of frevo orchestras, argue that the allowance of sound cars undermines the cultural value of the carnival and dilutes the experience for both participants and spectators.

These developments have significant implications for the local carnival scene in Olinda as it seeks to balance modern entertainment practices with the preservation of its rich cultural heritage. The city's government must navigate the complexities of a vibrant local music scene, ensure compliance with regulations, and respond to the concerns raised by those who have dedicated their careers to maintaining the authenticity of Olinda's celebrated carnival traditions.