Pianochords.. Didn't you study too hard when it came to all those music theory lessons, but you do like just to play? Then Pianochords may help you out. It shows you all the chords you can think of. Just press a key on the keyboard to set the root of the chord and click the display to select the derived chord. It's as simple as that, the perfect companion to Garageband!
Version 2.3: Leopard compatible.
Mac OS X 10.4 or later