This is a sequence of a solo koto instrumental by an unknown composer. It is thought to be quite old. In structure, it is a very early example of the danmono, a sort of theme-and-variations form.
This sequence is based on a transcription found in Willem Adriaansz' book, The Kumiata and Danmono Traditions of Japanese Koto Music (UC Press, 1973).
This sequence uses the default pitch bend range. But if you don't play the file all the way through, then hit that old reset button anyhow ... just to clear other possible parameters which may affect how the next file is played.