Blue Effect was a Czech progressive rock band, also operating under the names M. Efekt, Modrý efekt or The Special Blue Effect, since their formation in 1968. The line up included Radim Hladík, formerly of The Matadors. They changed several times their style from rhythm and blues, across jazz fusion to art rock.
The latest line-up was:
Jan Křížek - vocal, guitar
Václav Zima - drums
Vojtěch Říha - bassguitar, vocal
Radim Hladík died on 4 December 2016, aged 69, from pulmonary fibrosis.