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Electronic music is a term for music created using electronic devices. As defined by the IEEE standards body, electronic devices are low-power systems and ponents such as transistors and integrated circuits. Working from this definition, distinction can be made between instruments that produce sound through electromechanical means as opposed to instruments that produce sound using ponents. Examples of an electromechanical instrument are the teleharmonium, Hammond B3, and the electric guitar, whereas examples of an electronic instrument are a Theremin, synthesizer, and puter. Before electronic music, there was a growing desire posers to use emerging technologies for musical purposes. Several instruments were created that employed electromechanical designs and they paved the way for the later emergence of electronic instruments. An electromechanical instrument called the Teleharmonium or Telharmonium was developed by Thaddeus Cahill in 1897. Simple inconvenience hindered the adoption of the Teleharmonium: the instrument weighed seven tons and was the size of a boxcar. Several more refined versions were also constructed a few years later the final and most refined model arriving in 1907, weighing in at 200 tons. The first electronic instrument is often viewed to be the Theremin, invented by Professor Leon Theremin circa 1919 - 1920. Another early electronic instrument was the Ondes Martenot, which was used in the Turangalîla-Symphonie by Olivier Messiaen and also by other, primarily posers such as Andre Jolivet. The tape recorder was invented in Germany during World War II. It wasnt long posers used the tape recorder to develop a new technique position called Musique concrète. This technique involved editing together recorded fragments of natural and industrial sounds. posers used sounds that were produced entirely by electronic devices not designed for a musical purpose. The first pieces of musique concrète were written by Pierre Schaeffer, who later worked alongside such avant-garde posers as Pierre Henry, Pierre Boulez and Karlheinz Stockhausen. Stockhausen has worked for many years as part of Colognes Studio for Electronic bining electronically generated sounds with conventional orchestras. The first electronic music for magnetic posed in America pleted by Louis and Bebe Barron in 1950. Two new electronic instruments made their debut in 1957. Unlike the earlier Theremin and Ondes Martenot, these instruments were hard to use, required extensive programming, and neither could be played in real time. The first of these electronic instruments was puter when Max Mathews used a program called Music 1, and later Music 2, to create positions at Bell Laboratories. 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