風居住的街道, or 風の住む街/風の住む町, which translates to “The Town Where the Wind Lives” or “The City Where the Wind Dwells.”, is a music mixed with erhu and piano.
It seems to be related to a drama (described in 1).
In between 2:10 and 2:40 within the first release, the Erhu features a light and active tone, I considered it very unique and attractive.
I cannot find the same tone within any other releases.
I want to know more about it, maybe I will email the author some time in the future.