You press down the key which pushes up the capstan which pushes up the whippen which pushes up the jack spring which moves the jack which butts the butt and touches catch to back check and also makes the hammer hit the string and that’s the Action of the thing The action of the thing, is simple to explain but the pattern of it’s mechanism tricky to retain so if you need a hint, rely on this refrain I’ll show you how, repeat it now here once more and again. You press down the key which pushes up the capstan which pushes up the whippen which pushes up the jack spring which moves the jack which butts the butt and touches catch to back check and also makes the hammer hit the string and that’s the Action of the thing The action of the thing, is simple to explain but the pattern of it’s mechanism tricky to retain so if you need a hint, rely on this refrain I’ll show you how, repeat it now here once more and again. You press down the key which makes the capstan hit the whippen butt the whippen moves on whippen flange It makes the jack spring move the jack (which moves on jack flange) Hit the butt, which moves on butt flange Move the catch to hit the back check and it makes the hammer hit the string (The damper acts, the bridal strap pulls back the catch right after that) And that is the action of the thing.