The Bach Machine is a DIY paper gadget from CBC Music that composes real two-part counterpoint in the manner of Carl Philipp Emanuel Bach, based on his 1757 essay “Einfall, einin doppelten Contrapunct in der Octave von sechs Tacten zu machen, ohne die Regeln davon zu wissen.” Impress your friends and family by playing through all 31,381,059,609 possible compositions. Then double your fun by playing the left-hand part above the right (yes, this counterpoint’s invertible!) for another 31,381,059,609 possibilities. That’s more than 62 billion pieces in all!
To get started, just download and print. Then, open the gallery above to see how you put it all together.
The Bach Machine: compose like C.P.E. Bach with this DIY paper gadget – CBC Music