Title: 虹川のほとりで
Artist: Shiraha **(Please Confirm) He is also the one responsible for the great Pianoforte Medleys.
Album: 東方ピアノアレンジ曲集 vol.1
Original: Ghostly Band ~ Phantom Ensemble, the Prismriver Sister’s Theme from Touhou 7: Perfect Cherry Blossom.

Another soothing arrangement. The loudness on the original piece became calm. Maybe this is the real music when the sisters are not fighting 🙂