Why borrow just one note from the diminished seventh chord above or below? In 4(c), the Keyboard Chord Decoder indicates that when you move two notes up or down, you get a minor seventh chord. In the music for 4(c), our friend the Ddim7 starts life as a Bbmin7 on beat 1 of bar 1 and as an Fmin7 on beat 1 of bar 3; it resumes its dim7 form on the second half of the beat with a very keyboardistic move of a sixth in the outer voices of the right hand part. Keyboard Chord Decoder 4 Why not move two notes at a time?