An intriguing double canon at the octave, with that haunting simplicity Bach can impart to four related lines of music. First verse: LH Chorale on G.O. Vox Humane 8' with Tremblant Douce, RH on Positif Bourrdon 8' + Flutte 4', Pédale Bourdon 16' + Holpijp 8' (G.O). Second verse: LH Chorale on G.O. Trompet 8', RH on Pos. Bourdon 8' + Prestant 4' + Flutte 4' + Doublet 2', PD Bourdon 16' + Montre 8' (G.O.). WellTemperament-SeventhComma.[2:16]