Brazilian avant-jazz vanguardists Grupo Um celebrate their 50th anniversary, sharing a second previously lost 1970s album from the vaults. Nineteen Seventy Seven (titled after the year it was recorded) is another rip-roaring instrumental fusion treasure from the band which spawned from within Hermeto Pascoal's famed mid-1970s São Paulo collective. Like their debut album Starting Point, Grupo Um's Nineteen Seventy Seven was recorded when Brazil's military dictatorship was at its most repressive. Just like Hermeto Pascoal's Viajando Com O Som (1977) and Grupo Um's previous album Starting Point (1975), both of which remained unreleased until the 21st century, Zé Eduardo asserts that the 1977 album was flatly "without any chance to be released at that time." Recorded at Rogério Duprat's Vice-Versa Studios in São Paulo, the group were under both time and space restraints. Expanding from a trio to a quintet, original Grupo Um members Lelo Nazario (keys), Zé Eduardo Nazario (drums), and Zeca Assumpção (bass) were joined by saxophonist Roberto Sion and percussionist Carlinhos Gonçalves. Carlinhos, Zé and Zeca had already played together in the group Mandala, while brothers Lelo and Zé had just finished a stint backing Hermeto Pascoal during his years in São Paulo. Lelo was deeply immersed in modular synthesizer experimentation during this period, working extensively with the ARP2600 and EMS Synthi AKS. These electroacoustic explorations formed the sonic foundation for "Mobile/Stabile," one of his first compositions to merge modular synthesis with Brazilian music, a fusion that would ripple throughout the Brazilian jazz scene. The piece premiered at the first São Paulo International Jazz Festival in 1978, performed by Grupo Um with guest trumpeter Márcio Montarroyos. The version on Nineteen Seventy Seven is the first recording of the composition. Nineteen Seventy Seven combines Afro-Brazilian rhythm, modular synthesis and a plethora of whistles, percussion and effects pedals. Grupo Um's daring music represents a manifesto of resistance during the dictatorship years, but it's one which remains just as relevant today.