Anestis Logothetis (27 October 1921 – 6 January 1994) was a Greek avant-garde composer, noted both for his musical works and his invention of his own graphic notation system.
After graduating from the German School of Thessaloniki, he left Greece in 1942 in order to study engineering at Vienna Polytechnic Institute.
Initially he wrote a number of works using conventional musical notation and different combinations of instruments and orchestrations.
Around 1957, he started developing electronic music in Gottfried Michael Koenig's studio in Cologne, producing his composition Fantasmata in 1960.
[1] By the late 1950s, he also developed his own system of graphic notation incorporating visual symbols, relying on their interpretation and improvisation by performers.