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 __   __   __   __   __   __   _    _    __   __  
 \ \\/ //  \ \\/ //  \ \\/ // | || | ||  \ \\/ // 
  \   //    \ ` //    \   //  | || | ||   \   //  
  / . \\     | ||     / . \\  | \\_/ ||   / . \\  
 /_//\_\\    |_||    /_//\_\\  \____//   /_//\_\\ 
 `-`  --`    `-`'    `-`  --`   `---`    `-`  --`

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發送短信 : A Contribution to Teaching Vietnamese Music: Key Pitches in Context and the Pitch/intensity Contour Graph