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

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