====== Sheet Site======

  * DoMusicOnline:
    * Chinese pop songs, English pop song, some classic
    * download link: http://music.coms.asia/
    * video reference site: https://www.youtube.com/channel/UCu1SCApPlaBB1ZOXmOH_AUQ

  * HuanQiu GangQin (HQGQ.com) - Global Piano:
    * Chinese pop song, English pop song, classic songs
    * downlaod link: http://www.hqgq.com/

  * GangQinPu.com (Chong Chong GangQin) - Piano Sheet:
    * Chinese pop song, Japanese pop song, classic songs, English pop songs
    * download link: http://www.gangqinpu.com/

  * Tan8.com - Play BA! (also known as 77music)
    * Chinese songs, Japanese songs, other pop songs
    * learns online: http://www.tan8.com/video-2-1-0.html
    * download link: http://www.tan8.com/piano.html
    * app download link list: http://www.tan8.com/codeindex.php?c=geek&m=app_down

  * sooopu.com - Search Sheet
    * Traditional chinese instrument sheet
    * download link: http://www.sooopu.com/