Register for ToneGym:. Take a look at my previous video on the Cadential 6/4:. And here's my previous video on the Leading Tone chord:. TYPO: 0:43 is in the key of Ab, not Eb as composed. It's the same development though naturally. " The Gospel Climb up" is a traditional chord development or turn-around discovered in all sort of blues-derived music, most especially … Gospel! In the key of C major it would be…