In 1957, he created the music program, which allowed an IBM 704 mainframe computer to play a 17-second music composition.

1957年，他创建了“音乐”(Music)程序。IBM的704大型机用之弹奏了17秒种的音乐。

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A conductor USES signals and gestures to let the musicians know when to play carious parts of a composition.

乐队指挥使用信号和手势让音乐家们知道乐曲的各个部分何时演奏。

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Finished your composition, completing the fast reading after hearing began to play in before, the teacher will definitely put a hand to everybody, this is a very good opportunity.

写完作文，做好快速阅读之后在听力开始播放之前，老师老师肯定会把卷子发到大家手中，这时候就是很好的时机。

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