They started in 1967, formed around the vocalist Jim Pembroke, a British expatriate songwriter now living in Finland.
The other members of the band were Eero Koivistoinen (saxophone), Ronnie Österberg (drums), Hasse Walli (guitar), and Måns Groundstroem (bass).
In 1968 Groundstroem and Pembroke left the band, being replaced by Pekka Sarmanto and (another British vocalist) Frank Robson, respectively.
The Blues Section members would continue in such acclaimed progressive rock bands as Wigwam and Tasavallan Presidentti.
Eero Koivistoinen was to become an internationally acclaimed jazz musician, and Hasse Walli would discover world music, playing in such bands as Piirpauke.