"Expo" is a musical composition by Karlheinz Stockhausen, created between 1969 and 1970. This piece, designated as Number 31 in the composer's body of work, is written for three performers who utilize shortwave radio receivers, and it also includes a role for a sound projectionist.
1968: Stockhausen Commissioned for German Pavilion at Expo '70
In 1968, Karlheinz Stockhausen was invited to collaborate on the German Pavilion for the 1970 World Fair in Osaka, Japan. He proposed a spherical auditorium with a central audience surrounded by speakers.
December 1969: Composition of Expo in Kürten
Stockhausen worked on the composition of "Expo" in Kürten during December 1969, initially referring to it as "Trio".
1969: Composition of Expo Begins
Karlheinz Stockhausen began composing "Expo", a piece for three performers using shortwave radios and a sound projectionist, in 1969.
January 1970: Expo Composition Completed
Stockhausen finalized the composition of "Expo" in January 1970 in Kürten.
September 1970: Expo Performances Conclude at Expo '70
After a successful run of daily performances, the last performance of Stockhausen's "Expo" took place at the German Pavilion of Expo '70 in September 1970.
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