The introduction of synthesizers transformed world music. Music from all over the world was influenced by this new development. The music produced in the 1980s in the large cities surrounding the Amazon rainforest was also influenced by these changes. The keyboards used at the Beiradão parties, on the banks of the Amazon River, were transplanted to recording studios in Belém, Manaus and incorporated into the Amazon discography. This mixtape brings a rescue, within the phonographic productions of the Amazon region, with songs recorded mostly in the 80s and 90s where keyboards and synthesizers are prominent.