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The Electro-Theremin is an electronic musical instrument developed by trombonist Paul Tanner and amateur inventor Bob Whitsell in the late 1950s to produce a sound to mimic that of the theremin.〔(【引用サイトリンク】url=http://www.electrotheremin.com/etfaq.htm )〕 The Tannerin was a later recreation of the original built by Tom Polk in 1998. The instrument features a tone and portamento similar to that of the theremin (or thereminvox), but with a different control mechanism. It consisted of a sine wave generator with a knob that controlled the pitch, placed inside a wooden box. The pitch knob was attached to a slider on the outside of the box with some string. The player would move the slider, thus turning the knob to the desired frequency, with the help of markings drawn on the box. ==History== The instrument was custom-built at Tanner's request. Tanner appreciated the theremin's sound, but wanted greater control of pitch and attack. The Electro-Theremin uses mechanical controls, a long slide bar for the pitch (analogous to the slide of the trombone that was Tanner's main instrument) and a knob to adjust volume. This contrasts with the hand movements in space that formed the original theremin's signal feature. The Electro-Theremin also produces a slightly less complex timbre than the original. This is not due to the nature of the instrument, but due to Dr. Theremin's intentional harmonic generation in the output of the Theremin, which Tanner did not do. Tanner played it for the 1958 LP ''Music for Heavenly Bodies'', the first full-length album featuring the instrument, and played it subsequently on several television and movie soundtracks—most notably on George Greeley's theme for the 1960s TV series ''My Favorite Martian''—and on an LP entitled ''Music from Outer Space''. Most famously, Tanner played his Electro-Theremin on three tracks by The Beach Boys: "I Just Wasn't Made for These Times", "Good Vibrations", and "Wild Honey". The instrument used in "Good Vibrations" was a Heathkit tube-type audio oscillator coupled to a mechanical action that allowed the player to mark notes along a ruler-type scale where notes could be located quickly and precisely. Tanner's prototype Electro-Theremin appears to have been the only one made. In the late 1960s, Tanner donated or sold the instrument to a hospital to use for audiology work, because he believed that newer keyboard synthesizers made it obsolete.〔(The Paul Tanner Electro-Theremin - David S. Miller ). The rock group Led Zeppelin also made use of the Theremin on more than one occasion, both in a solo for it in Seattle in 1977, and featured in the Led Zeppelin concert movie "The song remains the same".〕 The Electro-Theremin was brought back to life in 1999 by Tom Polk who built a custom Electro-Theremin for Brian Wilson's solo tour of that year. Polk called his instrument the "Tannerin" in honor of the original creator and performer. 〔(Tannerin built for the 1999 Brian Wilson solo Tour - Tom Polk )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Electro-Theremin」の詳細全文を読む スポンサード リンク
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