Question: when was the Japanese composer of avant-garde music who wrote Music for Electric Metronomes born 

Context articles: Axl Hazarika
Takanori Arisawa
Otomo Yoshihide
Sebastian Volco
Robert Gluck
Music for Electric Metronomes
Toshi Ichiyanagi
Sergey Letov
Masao Koga
Koji Nakano (composer)

Axl Hazarika, avant-garde composer, electronic music producer, record producer, singer, songwriter, film-maker, entrepreneur hailing from Guwahati, Assam, is the pioneer of electronica/industrial/avant-garde music in Northeast India.
Takanori Arisawa (有澤 孝紀 , Arisawa Takanori , April 2, 1951 – November 26, 2005) was a Japanese composer and arranger best known for composing the "Sailor Moon" anime series and "Digimon" series (Seasons 1-4).
 He wrote music for the series, including its video games.
 Born in Tokyo, Arisawa began to learn piano at the age of 20.
 After graduating from Senzoku Gakuen College, Arisawa started his career in 1980 by composing "Shinjuku Transfer".
 He worked for the Tokyo Broadcasting System and wrote several TV dramas. From the 1990s until his death, Arisawa began composing for anime series exclusively.
 His work on "Sailor Moon" was initially based on pop music, but gradually began to change to those found in classical music.
 "Sailor Moon" was successful and Arisawa won several awards for his work.
 After "Sailor Moon", Arisawa composed music for several shows, including the "Digimon" series, until his death from bladder cancer in 2005.
大友 良英 (Ōtomo Yoshihide , born August 1, 1959 ) is a Japanese composer and multi-instrumentalist.
 He first came to international prominence in the 1990s as the leader of the experimental rock group Ground Zero, and has since worked in a variety of contexts, ranging from free improvisation to noise, jazz, avant-garde and contemporary classical.
 He is also a pioneering figure in the EAI-scene, and is featured on important records on labels like Erstwhile Records.
 He has composed music for many films, television dramas, and commercials.
 He plays guitar, turntables, and electronics.
Sebastian Volco (also known as Volco) is an Argentinian avant-garde composer, pianist and guitar player, best known as the creator of la Orquesta Metafisica, a music ensemble founded in 2009 in Buenos Aires (progressive rock, avant-garde and jazz fusion).
 Volco played in several Argentinian rock bands, including Fantasmagoria.
 He also made musical installations (such as Corte 7 in Museo de Bellas Artes, Buenos Aires) and wrote music for theatre and cinema (“Good Life Delivery” by Leonardo Di Cesare (2004)).
Robert Gluck (born 1955) is a pianist and composer whose repertoire spans jazz, live electronic music, and avant-garde music.
 Karl Ackermann (All About Jazz), wrote of the latest of Gluck’s five recordings: “As a composer and player, Gluck ranks with the likes of Andrew Hill and Cecil Taylor… Something Quiet is completely original, artistically spontaneous, and intellectually challenging.”
 Allan Kozinn (New York Times) wrote that Gluck is “an accomplished jazz pianist” who played with “virtuosic fluidity.”
 Keyboard magazine named him June 2009 “Unsigned Artist of the Month.”
 Gluck’s current musical collaborators include saxophonists Joe Giardullo and Ras Moshe, bassists Christopher Dean Sullivan and Michael Bisio, drummer Dean Sharp, and computer musician/composer Neil Rolnick.
Music for Electric Metronomes is an avant-garde aleatoric composition written in 1960 by Japanese composer Toshi Ichiyanagi for any number of performers between three and eight.
 The piece involves the manipulation of electric metronomes, followed by various unspecified sounds and actions.
 It is a very theatrical piece, and reflects Ichiyanagi's affiliation with Fluxus, an experimental art movement from the sixties.
 The only true scored "instrument" is an electric metronome for each individual player, though the varying sounds and/or actions may involve many different instruments and objects at the discretion of the performer.
 Because the graphic notation of score (which is a series of dashes, lines, and numbers in an erratic pattern of connected paths) leaves a lot of room for personal interpretation and expression, each performance is unique, and almost certainly cannot be reproduced.
 There is no conductor for the performance.
 It has been recorded on the album "Toshi Ichiyanagi: 1960's & 1990's".
 In a review of a performance by the S.E.M. Ensemble in 1992 at the Paula Cooper Gallery, the music critic of "The New York Times", Alex Ross, described the piece as "merely a timid, spastic prelude to György Ligeti's monumental "Poème symphonique" for 100 metronomes".
Toshi Ichiyanagi (一柳 慧 , Ichiyanagi Toshi , born 4 February 1933) is a Japanese composer of avant-garde music.
 He studied with Tomojiro Ikenouchi, Kishio Hirao, and John Cage.
Sergey Fyodorovich Letov (Russian: Серге́й Фё́дорович Ле́тов , born September 24, 1956), is a Russian musician and composer, known for improvisational style, and the founder of "Pentagram" recording label.
 He has collaborated with numerous jazz, avant-garde, modern classical, rock and electronic music artists including his younger brother Yegor Letov, composer Sergey Kuryokhin, and cult Soviet art punk band DK.
 Also wrote music for movies and plays, collaborated with Russian, Italian and Austrian theatres, German non-profit cultural association Goethe-Institut, and Moscow Institut of Journalistics and Literature.
Masao Koga (古賀 政男 , Koga Masao , November 18, 1904 – July 25, 1978) was a Japanese composer and guitarist known for creating melodies, and a pioneer of Japanese popular music.
 He was regarded as a notable figure for establishing the genre "enka", though Koga considered that he was a "ryūkōka" composer.
 He wrote numerous songs for Ichiro Fujiyama and Hibari Misora, and his work has been featured in various films, including Come See the Paradise, and Memoirs of a Geisha.
 He was the head of the "Japanese Society of Rights of Authors, Composers and Publishers" from 1964 to 1978.
 A museum was built in Shibuya to honor his achievements, and visitors to the Koga Masao Museum of Music (古賀政男音楽博物館 , Koga Masao Ongaku Hakubutsukan ) are able to view exhibits, and memorabilia featuring his work.
Koji Nakano (born August 1974-) is a Japanese composer.
 He was born in Japan and educated in Boston, The Hague, and San Diego.
 Nakano has been recognized as one of the major voices among Asian composers of his generation.
 His work strives to merge Western and Eastern musical traditions, and reflects the relationship between beauty, form and imperfection through the formality of music.
 Nakano received his bachelor's degree in composition with distinction, and master's degree in composition with academic honors and distinction, Pi Kappa Lambda, from the New England Conservatory of Music in Boston, where he studied with Lee Hyla and John Harbison.
 From 2002 to 2003, Nakano studied with Dutch composer Louis Andriessen in Amsterdam and at the Royal Conservatory of Hague as the Japanese Government Overseas Study Program Artist.
 In 2006, he received his Ph.D. in composition from the University of California at San Diego, where he studied with Chinary Ung.
 In addition to being the recipient of the American Artists and Museum Professionals in Asia Fellowship from the Asian Cultural Council, Nakano is also the first recipient of the Toru Takemitsu Award in Composition from the Japan Society of Boston awarded annually to the most talented young composer in the Boston area.
 In 2008, he became the first composer to receive the "S&R Washington Award Grand Prize" from the S&R Foundation, which is awarded annually to the most talented young artist (in the fields of fine arts, music, drama, dance, photography and film), for his/her contributions to U.S.- Japanese relations.
 The past distinguished grand prize awardees include soprano Maki Mori (2000), pianist Yu Kosuge (2002), violinists Yosuke Kawasaki (2004), Sayaka Shoji (2006), and Tamaki Kawakubo (2007).