“The Hannele Overture” was originally conceived as an electronic overture for “Hannele — the Hippie Opera” written in 1974 and revised in 1995. It features much of the material from the opera, mainly consisting of songs written and performed by the composer in the early 70s. When finished it proved too long to use as an overture to a 5 hour opera, and must therefore stand as a separate electroacoustic piece in its own right. It was realised in 1975 in the electronic music studios of Morley College London.