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為向艾靈頓公爵(Duke
Ellington)表示敬意，奧馬哈爵士樂大師路易斯衛茨路易吉(Lewis
Luigi Waites)，當地人簡稱其為路易吉，正在彈奏電顫琴
1999年7月29日
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喬斯林藝術博物館(Joslyn
Art Museum):綠色草地上的爵士樂"
地方性遺產
照片中的男人正在彈奏電顫琴(vibraphone)，您知道什麼是電顫琴嗎？
電顫琴是一種爵士樂樂器，於1920年左右發明的。它屬於敲打樂器，所以音樂家必須以敲擊或打擊的方式使其發聲。它看起來有點像是木琴，其上鋪有調音完成的金屬鍵，演奏者會使用一個毛氈製或木製拍打器敲擊演奏。琴鍵會發出輕柔且圓潤的聲音，而琴鍵底下的共鳴器能增加聲音的震動。此外，琴鍵及共鳴器之間的小型電扇能夠引發顫音或抖音效果，樂器本身的名字就是取自於這些電扇所造成的顫音效果。
每年夏季，內布拉斯加奧馬哈市的喬斯林藝術博物館內，都有數以千計的人邊聆聽電顫琴，邊享受爵士樂的美妙。爵士樂是19世紀晚期及20世紀早期時，由位於紐奧良、路易斯安那州、堪薩斯市、密蘇里及其他城市內的非裔美人音樂家所創。它與其他音樂最大的不同在於它的即興創作特色。一般來說，音樂家會依照作曲家創作音樂當時的曲調演奏；然而，演奏爵士樂時，音樂家會以一首歌曲開頭，接著進行即興創作或邊演奏邊作曲，這也是同一首爵士歌曲每次聽起來都不相同的原因。
The man in the photo is playing a vibraphone. Do you know what that is?
A vibraphone is a jazz instrument that was invented around 1920. It's a percussion instrument, so a musician must beat or strike it to make sounds. It looks a little like a xylophone and has tuned metal bars that a player hits with felt or wool beaters. Striking the bars makes a soft, mellow sound. Underneath the bars are "resonators," which add vibration to the sounds that are made. In addition, small electric fans between the bars and the resonators cause a vibrato, or trembling effect. These fans are what give the instrument its name.
Thousands of people can listen to a vibraphone as they enjoy jazz music every summer at the Joslyn Art Museum in Omaha, Nebraska. Jazz was invented by African American musicians in New Orleans, Louisiana, and Kansas City, Missouri, and other cities in the late 19th and early 20th centuries. What makes it different from other music is something called improvisation. Usually a composer writes music and a musician plays it exactly as it was written. With jazz, the musicians start with a song but then improvise, or start making music up as they go along. That is why many jazz songs never sound the same way twice.
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