There have been at least four bands called The Butterfly Effect: 1) Australian hard rock band
2) Swedish 90's electronic band
3) Thai Rock/indie band
4) Canadian alternative rock band (1999-2004)
(1) The Butterfly Effect is a hard rock band from Brisbane, Australia, formed in 1999. They have built a reputation for being one of the most exciting and hard working live acts in Australia. Since February 2002 the band has toured Australia and Europe extensively knocking up over 800 national and international performances as a headlining act.