Krakatau is a group formed in 1985 by the already-deceased drummer Edward Vesala, guitarist Raoul Björkenheim ja trombonist Jari Hongisto. The line-up has changed between albums, however, and for example, Tom Nekljudow, Ippe Kätkä and Affe Forsman have occupied the drummer's seat.  Since 2015, Ilmari Heikinheimo has played the drums in Krakatu's ranks. In addition, Jone Takamäki played the saxophones, toppophones and flutes in Krakatau for many years.

Over the years, the group has become known for their energetic concerts and their signature fusion of jazz and rock.