Chords & Harmony - Open & Closed Voicings - A methodical approach by Ralph Wyld
I've been thinking lots about the open/closed thing that Tony brought up again recently, and so I've come up with an exercise which I've been doing everyday this week. It's quite big... I can just about get through all the keys in a hour now, and it still makes my head hurt following it through and remembering which chord I'm on! But I really feel it's improving my knowledge of scales (just major so far, but there's no reason why it won't work through other scales/progressions etc.), and the chords within scales.