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  _____     _____     ______     ___      ______  
 |__  //   |  ___||  /_   _//   / _ \\   /_   _// 
   / //    | ||__    `-| |,-   / //\ \\    | ||   
  / //__   | ||__      | ||   |  ___  ||  _| ||   
 /_____||  |_____||    |_||   |_||  |_|| /__//    
 `-----`   `-----`     `-`'   `-`   `-`  `--`

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Text this: A Contribution to Teaching Vietnamese Music: Key Pitches in Context and the Pitch/intensity Contour Graph