1967 March Against the Electric Guitar (Marcha contra a Guitarra Elétrica in portuguese) was a notable protest in Brazilian music history that took place on July 17, 1967, in São Paulo. Key figures in MPB (Música Popular Brasileira) like Elis Regina, Jair Rodrigues, and Geraldo Vandré led the march. The core objective of the march was to defend national culture against the perceived “invasion” of foreign, specifically American and British musical influences. The electric guitar, popular in rock music from artists like The Beatles and the Beach Boys, was seen as a symbol of this cultural imperialism and the potential “americanization” of Brazilian and Latin American music.

The movement’s slogan was “Defender O Que É Nosso” (“Defend What Is Ours”). Participants sought to preserve the purely Brazilian sound of MPB, which typically featured acoustic instruments.