I adapted this Bach Invention for keyboard to be played by 2 mandolins. There are two scores: one for the lower voice (left hand) and one for the upper voice (right hand). This is the lower voice which is transposed up 1 octave to get it into the mandolin range. A few low notes had to be moved up further into range usually by another octave. Now my son and I just have to practice it a little more so we can play it together. Thanks to Mike Magatagan for doing the original keyboard transcription and posting it to MuseScore.