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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