Help me understand this cord and it's function Song: there will never be another you Place: in the C-section, bar 28 what: a minor 2 5 cell, Am7b5 - D7 Okay, in the key of Eb, I would normally see bar 28 as a secondary minor 2 5 leading naturally into the iii cord which would be G minor. But, it's A Head fake of sorts and leads not to the iii chord but instead resolves back to the tonic cord where it begins the long turnaround. I'm not too disturbed by this as I understand that the three cord and the tonic along with the iv are in the same functional group of "home" type chords so I can see how that works. The question: That Am7b5 chord is clearly there to produce a tension leading into the turnaround, but I'm not sure how to understand and think about this. This cord is built off the b5degree of the key and I am wondering, is this odd little 2 5, or b5 chord, some kind of common device in jazz that performs a particular function in songs? I know that in this case it produces the tension needed to start into the turnaround. It's classic tension - whenever I hear it I think of Dudley do right frantically untying Nell from the railroad tracks as the train approaches. Again, what is this harmonic device and how should I think about it?