"A Bolha-Um Passo A Frente-1973 Brazil":
This group formed in 1965 as the Bubbles and made their first single in 1966, two versions of hits by the Rolling Stones and the Shakers (a Uruguayan group).They saw the Isle of Wight Festival in England, they decided to re-formulate themselves in a more Brazilian fashion and became A Bolha.
In 1971 came their single "Sem Nada," with co-author, playwright Geraldo Carneiro, who is also a partner of various artists such as Egberto Gismonti, Tom Jobim, Astor Piazzola, Wagner Tiso, and Eduardo Souto Neto, a well-known conductor and producer. Working with Ivan Lins, Simone, and others since '70s, the latter was a runner-up in the VI Festival Internacional da Canção (the famous Brazilian version of the Eurovision Song Contest) and A Bolha won the Best Group Award.
The first LP, Um Passo à Frente, was recorded in 1973, and it's a hard prog rock album with Deep Purple influences (early period).