Jiangnan sizhu in B♭ major

The task

Compose a Jiangnan sizhu ensemble piece in Bb major, 87 BPM andante, 4/4, about 80 bars and about three minutes, scored for dizi, erhu, pipa and yangqin in 4 voices. Texture: each instrument ornamenting the same melodic skeleton. Open with 4 bars of dizi alone, then layer the other parts in one at a time. The main…