Phono 73

Phono 73 was a music festival held at the Anhembi Convention Center in São Paulo from 10 to 13 May 1973. Organised by Phonogram, it featured nearly all artists under the label's contract.

Originally conceived as a marketing event to promote the label's catalogue, the festival acquired strong political undertones due to Brazil's military dictatorship at the time. The most notable act of censorship occurred when Chico Buarque and Gilberto Gil had their microphones cut off by government inspectors, who feared the duo would perform their newly composed song "Cálice". Other participants included Raul Seixas, Elis Regina, Gal Costa, MPB4, Caetano Veloso, Wilson Simonal, and Jorge Ben.

The event was documented in the triple LP Phono 73 – O canto de um povo, reissued as a double CD in 1997. In 2005, the Phono 73 box set was released, containing two CDs and a DVD compiled from previously unreleased 35 mm footage filmed by director Guga de Oliveira.