Canon in B♭ major

The task

Compose a canon in Bb major, 67 BPM adagio, 4/4, about 72 bars and about three minutes, scored for solo piano in 3 voices. Texture: three voices entering two bars apart with the same line. Open with 4 bars of solo piano alone, then layer the other parts in one at a time. The main section runs on a 4-bar diatonic loop…