An Excellent Piece of Music Koto, Michio ! Video created by martha h.a. Music is attribute to an author. martha h.a. on niconico http://dic.nicovideo.jp/v/sm21949499 http://www.nicozon.net/search/martha%20h.a. http://nicogame.info/user/12168508 http://nicoapple.sub.jp/keyword.html?word=martha%20h.&page=1 https://www.nicovideo.jp/user/12168508/video https://www.nicovideo.jp/watch/sm33325138?playlist=eyJpZCI6InZpZGVvX3dhdGNoX3BsYXlsaXN0X3VwbG9hZGVkIiwidXNlcklkIjoxMjE2ODUwOH0 koasam on vimeo http://vimeo.com/user15081610 http://www.gooddrama.net/japanese-drama/shima-no-sensei-episode-1